diff --git a/api/audio_codecs/audio_decoder.cc b/api/audio_codecs/audio_decoder.cc
index 4b18b4ab52..4fc995172b 100644
--- a/api/audio_codecs/audio_decoder.cc
+++ b/api/audio_codecs/audio_decoder.cc
@@ -10,7 +10,6 @@
 
 #include "api/audio_codecs/audio_decoder.h"
 
-#include <assert.h>
 
 #include <memory>
 #include <utility>
diff --git a/modules/audio_coding/acm2/acm_resampler.cc b/modules/audio_coding/acm2/acm_resampler.cc
index 367ec2b9cd..7c7393d72f 100644
--- a/modules/audio_coding/acm2/acm_resampler.cc
+++ b/modules/audio_coding/acm2/acm_resampler.cc
@@ -10,7 +10,6 @@
 
 #include "modules/audio_coding/acm2/acm_resampler.h"
 
-#include <assert.h>
 #include <string.h>
 
 #include "rtc_base/logging.h"
diff --git a/modules/audio_coding/acm2/acm_send_test.cc b/modules/audio_coding/acm2/acm_send_test.cc
index cda668dab8..a84fa7c3e9 100644
--- a/modules/audio_coding/acm2/acm_send_test.cc
+++ b/modules/audio_coding/acm2/acm_send_test.cc
@@ -10,7 +10,6 @@
 
 #include "modules/audio_coding/acm2/acm_send_test.h"
 
-#include <assert.h>
 #include <stdio.h>
 #include <string.h>
 
diff --git a/modules/audio_coding/acm2/audio_coding_module.cc b/modules/audio_coding/acm2/audio_coding_module.cc
index 7d0f4d1e84..b5c0c3bc4e 100644
--- a/modules/audio_coding/acm2/audio_coding_module.cc
+++ b/modules/audio_coding/acm2/audio_coding_module.cc
@@ -10,7 +10,6 @@
 
 #include "modules/audio_coding/include/audio_coding_module.h"
 
-#include <assert.h>
 #include <algorithm>
 #include <cstdint>
 
diff --git a/modules/audio_coding/neteq/accelerate.cc b/modules/audio_coding/neteq/accelerate.cc
index e97191d8d2..954b148e0e 100644
--- a/modules/audio_coding/neteq/accelerate.cc
+++ b/modules/audio_coding/neteq/accelerate.cc
@@ -10,7 +10,6 @@
 
 #include "modules/audio_coding/neteq/accelerate.h"
 
-#include <assert.h>
 
 #include "api/array_view.h"
 #include "modules/audio_coding/neteq/audio_multi_vector.h"
diff --git a/modules/audio_coding/neteq/audio_decoder_unittest.cc b/modules/audio_coding/neteq/audio_decoder_unittest.cc
index 2277872ee4..b13fe44f87 100644
--- a/modules/audio_coding/neteq/audio_decoder_unittest.cc
+++ b/modules/audio_coding/neteq/audio_decoder_unittest.cc
@@ -8,7 +8,6 @@
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
-#include <assert.h>
 #include <stdlib.h>
 
 #include <array>
diff --git a/modules/audio_coding/neteq/audio_multi_vector.cc b/modules/audio_coding/neteq/audio_multi_vector.cc
index 290d7eae22..a3b5ce30d7 100644
--- a/modules/audio_coding/neteq/audio_multi_vector.cc
+++ b/modules/audio_coding/neteq/audio_multi_vector.cc
@@ -10,7 +10,6 @@
 
 #include "modules/audio_coding/neteq/audio_multi_vector.h"
 
-#include <assert.h>
 
 #include <algorithm>
 
diff --git a/modules/audio_coding/neteq/audio_vector.cc b/modules/audio_coding/neteq/audio_vector.cc
index 5e435e944d..ce27a8842d 100644
--- a/modules/audio_coding/neteq/audio_vector.cc
+++ b/modules/audio_coding/neteq/audio_vector.cc
@@ -10,7 +10,6 @@
 
 #include "modules/audio_coding/neteq/audio_vector.h"
 
-#include <assert.h>
 
 #include <algorithm>
 #include <memory>
diff --git a/modules/audio_coding/neteq/background_noise.cc b/modules/audio_coding/neteq/background_noise.cc
index ae4645c78e..8f61598d48 100644
--- a/modules/audio_coding/neteq/background_noise.cc
+++ b/modules/audio_coding/neteq/background_noise.cc
@@ -10,7 +10,6 @@
 
 #include "modules/audio_coding/neteq/background_noise.h"
 
-#include <assert.h>
 #include <string.h>  // memcpy
 
 #include <algorithm>  // min, max
diff --git a/modules/audio_coding/neteq/comfort_noise.cc b/modules/audio_coding/neteq/comfort_noise.cc
index b02e3d747f..7169f06cb3 100644
--- a/modules/audio_coding/neteq/comfort_noise.cc
+++ b/modules/audio_coding/neteq/comfort_noise.cc
@@ -10,7 +10,6 @@
 
 #include "modules/audio_coding/neteq/comfort_noise.h"
 
-#include <assert.h>
 
 #include <cstdint>
 #include <memory>
diff --git a/modules/audio_coding/neteq/decision_logic.cc b/modules/audio_coding/neteq/decision_logic.cc
index d702729881..edefbe6d67 100644
--- a/modules/audio_coding/neteq/decision_logic.cc
+++ b/modules/audio_coding/neteq/decision_logic.cc
@@ -10,7 +10,6 @@
 
 #include "modules/audio_coding/neteq/decision_logic.h"
 
-#include <assert.h>
 #include <stdio.h>
 
 #include <string>
diff --git a/modules/audio_coding/neteq/delay_manager.cc b/modules/audio_coding/neteq/delay_manager.cc
index aec80cfa4b..41de274ba3 100644
--- a/modules/audio_coding/neteq/delay_manager.cc
+++ b/modules/audio_coding/neteq/delay_manager.cc
@@ -10,7 +10,6 @@
 
 #include "modules/audio_coding/neteq/delay_manager.h"
 
-#include <assert.h>
 #include <stdio.h>
 #include <stdlib.h>
 
diff --git a/modules/audio_coding/neteq/dsp_helper.cc b/modules/audio_coding/neteq/dsp_helper.cc
index 91979f2d48..2b1518e867 100644
--- a/modules/audio_coding/neteq/dsp_helper.cc
+++ b/modules/audio_coding/neteq/dsp_helper.cc
@@ -10,7 +10,6 @@
 
 #include "modules/audio_coding/neteq/dsp_helper.h"
 
-#include <assert.h>
 #include <string.h>  // Access to memset.
 
 #include <algorithm>  // Access to min, max.
diff --git a/modules/audio_coding/neteq/expand.cc b/modules/audio_coding/neteq/expand.cc
index ffaa4c74aa..37a08d634b 100644
--- a/modules/audio_coding/neteq/expand.cc
+++ b/modules/audio_coding/neteq/expand.cc
@@ -10,7 +10,6 @@
 
 #include "modules/audio_coding/neteq/expand.h"
 
-#include <assert.h>
 #include <string.h>  // memset
 
 #include <algorithm>  // min, max
diff --git a/modules/audio_coding/neteq/expand.h b/modules/audio_coding/neteq/expand.h
index 3b0cea3d93..35dee65e7f 100644
--- a/modules/audio_coding/neteq/expand.h
+++ b/modules/audio_coding/neteq/expand.h
@@ -11,7 +11,6 @@
 #ifndef MODULES_AUDIO_CODING_NETEQ_EXPAND_H_
 #define MODULES_AUDIO_CODING_NETEQ_EXPAND_H_
 
-#include <assert.h>
 
 #include <memory>
 
diff --git a/modules/audio_coding/neteq/merge.cc b/modules/audio_coding/neteq/merge.cc
index 770e2e3590..07d8722e37 100644
--- a/modules/audio_coding/neteq/merge.cc
+++ b/modules/audio_coding/neteq/merge.cc
@@ -10,7 +10,6 @@
 
 #include "modules/audio_coding/neteq/merge.h"
 
-#include <assert.h>
 #include <string.h>  // memmove, memcpy, memset, size_t
 
 #include <algorithm>  // min, max
diff --git a/modules/audio_coding/neteq/nack_tracker.cc b/modules/audio_coding/neteq/nack_tracker.cc
index 9a873eee07..8d94306d04 100644
--- a/modules/audio_coding/neteq/nack_tracker.cc
+++ b/modules/audio_coding/neteq/nack_tracker.cc
@@ -10,7 +10,6 @@
 
 #include "modules/audio_coding/neteq/nack_tracker.h"
 
-#include <assert.h>
 
 #include <cstdint>
 #include <utility>
diff --git a/modules/audio_coding/neteq/neteq_impl.cc b/modules/audio_coding/neteq/neteq_impl.cc
index 8b07d7e47c..7225227789 100644
--- a/modules/audio_coding/neteq/neteq_impl.cc
+++ b/modules/audio_coding/neteq/neteq_impl.cc
@@ -10,7 +10,6 @@
 
 #include "modules/audio_coding/neteq/neteq_impl.h"
 
-#include <assert.h>
 
 #include <algorithm>
 #include <cstdint>
diff --git a/modules/audio_coding/neteq/red_payload_splitter.cc b/modules/audio_coding/neteq/red_payload_splitter.cc
index 2f21a5ff6c..b517e38071 100644
--- a/modules/audio_coding/neteq/red_payload_splitter.cc
+++ b/modules/audio_coding/neteq/red_payload_splitter.cc
@@ -10,7 +10,6 @@
 
 #include "modules/audio_coding/neteq/red_payload_splitter.h"
 
-#include <assert.h>
 #include <stddef.h>
 
 #include <cstdint>
diff --git a/modules/audio_coding/neteq/red_payload_splitter_unittest.cc b/modules/audio_coding/neteq/red_payload_splitter_unittest.cc
index 7275232daa..1f16945cdb 100644
--- a/modules/audio_coding/neteq/red_payload_splitter_unittest.cc
+++ b/modules/audio_coding/neteq/red_payload_splitter_unittest.cc
@@ -12,7 +12,6 @@
 
 #include "modules/audio_coding/neteq/red_payload_splitter.h"
 
-#include <assert.h>
 
 #include <memory>
 #include <utility>  // pair
diff --git a/modules/audio_coding/neteq/statistics_calculator.cc b/modules/audio_coding/neteq/statistics_calculator.cc
index 12a0e3c9ec..741cdbd778 100644
--- a/modules/audio_coding/neteq/statistics_calculator.cc
+++ b/modules/audio_coding/neteq/statistics_calculator.cc
@@ -10,7 +10,6 @@
 
 #include "modules/audio_coding/neteq/statistics_calculator.h"
 
-#include <assert.h>
 #include <string.h>  // memset
 
 #include <algorithm>
diff --git a/modules/audio_coding/neteq/time_stretch.h b/modules/audio_coding/neteq/time_stretch.h
index 26d295f669..17ea4ec5a7 100644
--- a/modules/audio_coding/neteq/time_stretch.h
+++ b/modules/audio_coding/neteq/time_stretch.h
@@ -11,7 +11,6 @@
 #ifndef MODULES_AUDIO_CODING_NETEQ_TIME_STRETCH_H_
 #define MODULES_AUDIO_CODING_NETEQ_TIME_STRETCH_H_
 
-#include <assert.h>
 #include <string.h>  // memset, size_t
 
 #include "modules/audio_coding/neteq/audio_multi_vector.h"
diff --git a/modules/audio_coding/neteq/tools/output_audio_file.h b/modules/audio_coding/neteq/tools/output_audio_file.h
index 7220a36d69..f5b0988aa3 100644
--- a/modules/audio_coding/neteq/tools/output_audio_file.h
+++ b/modules/audio_coding/neteq/tools/output_audio_file.h
@@ -11,7 +11,6 @@
 #ifndef MODULES_AUDIO_CODING_NETEQ_TOOLS_OUTPUT_AUDIO_FILE_H_
 #define MODULES_AUDIO_CODING_NETEQ_TOOLS_OUTPUT_AUDIO_FILE_H_
 
-#include <assert.h>
 #include <stdio.h>
 
 #include <string>
diff --git a/modules/audio_coding/neteq/tools/rtp_analyze.cc b/modules/audio_coding/neteq/tools/rtp_analyze.cc
index 46fc2d744e..7ecf925ebb 100644
--- a/modules/audio_coding/neteq/tools/rtp_analyze.cc
+++ b/modules/audio_coding/neteq/tools/rtp_analyze.cc
@@ -8,7 +8,6 @@
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
-#include <assert.h>
 #include <stdio.h>
 
 #include <memory>
diff --git a/modules/audio_coding/neteq/tools/rtp_file_source.cc b/modules/audio_coding/neteq/tools/rtp_file_source.cc
index 16b225e5df..e9c6fed951 100644
--- a/modules/audio_coding/neteq/tools/rtp_file_source.cc
+++ b/modules/audio_coding/neteq/tools/rtp_file_source.cc
@@ -10,7 +10,6 @@
 
 #include "modules/audio_coding/neteq/tools/rtp_file_source.h"
 
-#include <assert.h>
 #include <string.h>
 #ifndef WIN32
 #include <netinet/in.h>
diff --git a/modules/audio_coding/neteq/tools/rtp_generator.cc b/modules/audio_coding/neteq/tools/rtp_generator.cc
index a37edef20a..38c30c4f23 100644
--- a/modules/audio_coding/neteq/tools/rtp_generator.cc
+++ b/modules/audio_coding/neteq/tools/rtp_generator.cc
@@ -10,7 +10,6 @@
 
 #include "modules/audio_coding/neteq/tools/rtp_generator.h"
 
-#include <assert.h>
 
 namespace webrtc {
 namespace test {
diff --git a/modules/audio_coding/test/Channel.cc b/modules/audio_coding/test/Channel.cc
index d7bd6a968b..ec0eccb5d9 100644
--- a/modules/audio_coding/test/Channel.cc
+++ b/modules/audio_coding/test/Channel.cc
@@ -10,7 +10,6 @@
 
 #include "modules/audio_coding/test/Channel.h"
 
-#include <assert.h>
 
 #include <iostream>
 
diff --git a/modules/audio_device/linux/audio_device_alsa_linux.cc b/modules/audio_device/linux/audio_device_alsa_linux.cc
index 60e01e1239..a0f574475a 100644
--- a/modules/audio_device/linux/audio_device_alsa_linux.cc
+++ b/modules/audio_device/linux/audio_device_alsa_linux.cc
@@ -10,7 +10,6 @@
 
 #include "modules/audio_device/linux/audio_device_alsa_linux.h"
 
-#include <assert.h>
 
 #include "modules/audio_device/audio_device_config.h"
 #include "rtc_base/logging.h"
diff --git a/modules/audio_device/win/audio_device_core_win.cc b/modules/audio_device/win/audio_device_core_win.cc
index a3723edb56..8bfa0eae15 100644
--- a/modules/audio_device/win/audio_device_core_win.cc
+++ b/modules/audio_device/win/audio_device_core_win.cc
@@ -25,7 +25,6 @@
 
 #include "modules/audio_device/win/audio_device_core_win.h"
 
-#include <assert.h>
 #include <string.h>
 
 #include <comdef.h>
diff --git a/modules/desktop_capture/mac/desktop_configuration.mm b/modules/desktop_capture/mac/desktop_configuration.mm
index 5962fabb70..ef69b6424f 100644
--- a/modules/desktop_capture/mac/desktop_configuration.mm
+++ b/modules/desktop_capture/mac/desktop_configuration.mm
@@ -14,6 +14,8 @@
 #include <algorithm>
 #include <Cocoa/Cocoa.h>
 
+#include "rtc_base/checks.h"
+
 #if !defined(MAC_OS_X_VERSION_10_7) || \
     MAC_OS_X_VERSION_MIN_REQUIRED < MAC_OS_X_VERSION_10_7
 
@@ -40,7 +42,7 @@ DesktopRect NSRectToDesktopRect(const NSRect& ns_rect) {
 // relative to |bounds|.
 void InvertRectYOrigin(const DesktopRect& bounds,
                        DesktopRect* rect) {
-  assert(bounds.top() == 0);
+  RTC_DCHECK_EQ(bounds.top(), 0);
   *rect = DesktopRect::MakeXYWH(
       rect->left(), bounds.bottom() - rect->bottom(),
       rect->width(), rect->height());
@@ -106,7 +108,7 @@ MacDesktopConfiguration MacDesktopConfiguration::GetCurrent(Origin origin) {
   MacDesktopConfiguration desktop_config;
 
   NSArray* screens = [NSScreen screens];
-  assert(screens);
+  RTC_DCHECK(screens);
 
   // Iterator over the monitors, adding the primary monitor and monitors whose
   // DPI match that of the primary monitor.
diff --git a/modules/desktop_capture/mouse_cursor_monitor_mac.mm b/modules/desktop_capture/mouse_cursor_monitor_mac.mm
index 31ad428e0a..995aeb9176 100644
--- a/modules/desktop_capture/mouse_cursor_monitor_mac.mm
+++ b/modules/desktop_capture/mouse_cursor_monitor_mac.mm
@@ -10,7 +10,6 @@
 
 #include "modules/desktop_capture/mouse_cursor_monitor.h"
 
-#include <assert.h>
 
 #include <memory>
 
@@ -26,6 +25,7 @@
 #include "modules/desktop_capture/mac/desktop_configuration_monitor.h"
 #include "modules/desktop_capture/mac/window_list_utils.h"
 #include "modules/desktop_capture/mouse_cursor.h"
+#include "rtc_base/checks.h"
 
 namespace webrtc {
 
@@ -88,21 +88,21 @@ MouseCursorMonitorMac::MouseCursorMonitorMac(const DesktopCaptureOptions& option
       screen_id_(screen_id),
       callback_(NULL),
       mode_(SHAPE_AND_POSITION) {
-  assert(window_id == kCGNullWindowID || screen_id == kInvalidScreenId);
+  RTC_DCHECK(window_id == kCGNullWindowID || screen_id == kInvalidScreenId);
 }
 
 MouseCursorMonitorMac::~MouseCursorMonitorMac() {}
 
 void MouseCursorMonitorMac::Init(Callback* callback, Mode mode) {
-  assert(!callback_);
-  assert(callback);
+  RTC_DCHECK(!callback_);
+  RTC_DCHECK(callback);
 
   callback_ = callback;
   mode_ = mode;
 }
 
 void MouseCursorMonitorMac::Capture() {
-  assert(callback_);
+  RTC_DCHECK(callback_);
 
   CGEventRef event = CGEventCreate(NULL);
   CGPoint gc_position = CGEventGetLocation(event);
diff --git a/modules/desktop_capture/mouse_cursor_monitor_unittest.cc b/modules/desktop_capture/mouse_cursor_monitor_unittest.cc
index 268e5e3475..f771276a2b 100644
--- a/modules/desktop_capture/mouse_cursor_monitor_unittest.cc
+++ b/modules/desktop_capture/mouse_cursor_monitor_unittest.cc
@@ -10,7 +10,6 @@
 
 #include "modules/desktop_capture/mouse_cursor_monitor.h"
 
-#include <assert.h>
 #include <stddef.h>
 
 #include <memory>
diff --git a/modules/desktop_capture/mouse_cursor_monitor_win.cc b/modules/desktop_capture/mouse_cursor_monitor_win.cc
index 5a10ee1251..c892d59955 100644
--- a/modules/desktop_capture/mouse_cursor_monitor_win.cc
+++ b/modules/desktop_capture/mouse_cursor_monitor_win.cc
@@ -8,7 +8,6 @@
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
-#include <assert.h>
 #include <string.h>
 
 #include <memory>
diff --git a/modules/desktop_capture/screen_capturer_helper.cc b/modules/desktop_capture/screen_capturer_helper.cc
index e8bd3fc450..d55aea6487 100644
--- a/modules/desktop_capture/screen_capturer_helper.cc
+++ b/modules/desktop_capture/screen_capturer_helper.cc
@@ -10,7 +10,6 @@
 
 #include "modules/desktop_capture/screen_capturer_helper.h"
 
-#include <assert.h>
 
 namespace webrtc {
 
diff --git a/modules/desktop_capture/window_capturer_mac.mm b/modules/desktop_capture/window_capturer_mac.mm
index cbbc500613..de15d65ac5 100644
--- a/modules/desktop_capture/window_capturer_mac.mm
+++ b/modules/desktop_capture/window_capturer_mac.mm
@@ -8,7 +8,6 @@
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
-#include <assert.h>
 #include <ApplicationServices/ApplicationServices.h>
 #include <Cocoa/Cocoa.h>
 #include <CoreFoundation/CoreFoundation.h>
@@ -24,6 +23,7 @@
 #include "modules/desktop_capture/mac/desktop_frame_cgimage.h"
 #include "modules/desktop_capture/mac/window_list_utils.h"
 #include "modules/desktop_capture/window_finder_mac.h"
+#include "rtc_base/checks.h"
 #include "rtc_base/constructor_magic.h"
 #include "rtc_base/logging.h"
 #include "rtc_base/trace_event.h"
@@ -142,8 +142,8 @@ bool WindowCapturerMac::IsOccluded(const DesktopVector& pos) {
 }
 
 void WindowCapturerMac::Start(Callback* callback) {
-  assert(!callback_);
-  assert(callback);
+  RTC_DCHECK(!callback_);
+  RTC_DCHECK(callback);
 
   callback_ = callback;
 }
diff --git a/modules/remote_bitrate_estimator/aimd_rate_control.cc b/modules/remote_bitrate_estimator/aimd_rate_control.cc
index bf7119cc7d..0a754e1f41 100644
--- a/modules/remote_bitrate_estimator/aimd_rate_control.cc
+++ b/modules/remote_bitrate_estimator/aimd_rate_control.cc
@@ -13,7 +13,6 @@
 #include <inttypes.h>
 
 #include <algorithm>
-#include <cassert>
 #include <cmath>
 #include <cstdio>
 #include <string>
diff --git a/modules/remote_bitrate_estimator/inter_arrival.cc b/modules/remote_bitrate_estimator/inter_arrival.cc
index a8cf47fbfe..ce8af0bfb7 100644
--- a/modules/remote_bitrate_estimator/inter_arrival.cc
+++ b/modules/remote_bitrate_estimator/inter_arrival.cc
@@ -10,8 +10,6 @@
 
 #include "modules/remote_bitrate_estimator/inter_arrival.h"
 
-#include <cassert>
-
 #include "modules/include/module_common_types_public.h"
 #include "rtc_base/logging.h"
 
diff --git a/modules/remote_bitrate_estimator/overuse_estimator.cc b/modules/remote_bitrate_estimator/overuse_estimator.cc
index 3427d5880c..1ae9fcfb07 100644
--- a/modules/remote_bitrate_estimator/overuse_estimator.cc
+++ b/modules/remote_bitrate_estimator/overuse_estimator.cc
@@ -10,7 +10,6 @@
 
 #include "modules/remote_bitrate_estimator/overuse_estimator.h"
 
-#include <assert.h>
 #include <math.h>
 #include <string.h>
 
diff --git a/modules/remote_bitrate_estimator/remote_bitrate_estimator_single_stream.cc b/modules/remote_bitrate_estimator/remote_bitrate_estimator_single_stream.cc
index ddaa1de088..bbb2db2bb5 100644
--- a/modules/remote_bitrate_estimator/remote_bitrate_estimator_single_stream.cc
+++ b/modules/remote_bitrate_estimator/remote_bitrate_estimator_single_stream.cc
@@ -10,7 +10,6 @@
 
 #include "modules/remote_bitrate_estimator/remote_bitrate_estimator_single_stream.h"
 
-#include <assert.h>
 
 #include <cstdint>
 #include <utility>
diff --git a/modules/rtp_rtcp/source/rtp_format_video_generic.cc b/modules/rtp_rtcp/source/rtp_format_video_generic.cc
index 35d0f3dcc5..f5c7f2ee29 100644
--- a/modules/rtp_rtcp/source/rtp_format_video_generic.cc
+++ b/modules/rtp_rtcp/source/rtp_format_video_generic.cc
@@ -10,7 +10,6 @@
 
 #include "modules/rtp_rtcp/source/rtp_format_video_generic.h"
 
-#include <assert.h>
 #include <string.h>
 
 #include "absl/types/optional.h"
diff --git a/modules/rtp_rtcp/source/rtp_utility.cc b/modules/rtp_rtcp/source/rtp_utility.cc
index d76e1981f6..c96c082473 100644
--- a/modules/rtp_rtcp/source/rtp_utility.cc
+++ b/modules/rtp_rtcp/source/rtp_utility.cc
@@ -10,7 +10,6 @@
 
 #include "modules/rtp_rtcp/source/rtp_utility.h"
 
-#include <assert.h>
 #include <stddef.h>
 
 #include <string>
diff --git a/modules/utility/source/helpers_android.cc b/modules/utility/source/helpers_android.cc
index 0206d15274..f4b35a7ecb 100644
--- a/modules/utility/source/helpers_android.cc
+++ b/modules/utility/source/helpers_android.cc
@@ -11,7 +11,6 @@
 #include "modules/utility/include/helpers_android.h"
 
 #include <android/log.h>
-#include <assert.h>
 #include <pthread.h>
 #include <stddef.h>
 #include <unistd.h>
diff --git a/modules/video_capture/device_info_impl.cc b/modules/video_capture/device_info_impl.cc
index d5abb29407..ac78cbc84a 100644
--- a/modules/video_capture/device_info_impl.cc
+++ b/modules/video_capture/device_info_impl.cc
@@ -10,7 +10,6 @@
 
 #include "modules/video_capture/device_info_impl.h"
 
-#include <assert.h>
 #include <stdlib.h>
 
 #include "absl/strings/match.h"
diff --git a/modules/video_capture/windows/device_info_ds.cc b/modules/video_capture/windows/device_info_ds.cc
index 3731dce8bc..455501fb07 100644
--- a/modules/video_capture/windows/device_info_ds.cc
+++ b/modules/video_capture/windows/device_info_ds.cc
@@ -10,7 +10,6 @@
 
 #include "modules/video_capture/windows/device_info_ds.h"
 
-#include <assert.h>
 #include <dvdmedia.h>
 
 #include "modules/video_capture/video_capture_config.h"
diff --git a/modules/video_coding/codecs/vp8/libvpx_vp8_encoder.cc b/modules/video_coding/codecs/vp8/libvpx_vp8_encoder.cc
index a994193031..51315fc900 100644
--- a/modules/video_coding/codecs/vp8/libvpx_vp8_encoder.cc
+++ b/modules/video_coding/codecs/vp8/libvpx_vp8_encoder.cc
@@ -10,7 +10,6 @@
 
 #include "modules/video_coding/codecs/vp8/libvpx_vp8_encoder.h"
 
-#include <assert.h>
 #include <string.h>
 
 #include <algorithm>
diff --git a/modules/video_coding/codecs/vp9/include/vp9_globals.h b/modules/video_coding/codecs/vp9/include/vp9_globals.h
index 34aa0bc6cf..840d63ec0f 100644
--- a/modules/video_coding/codecs/vp9/include/vp9_globals.h
+++ b/modules/video_coding/codecs/vp9/include/vp9_globals.h
@@ -14,7 +14,6 @@
 #ifndef MODULES_VIDEO_CODING_CODECS_VP9_INCLUDE_VP9_GLOBALS_H_
 #define MODULES_VIDEO_CODING_CODECS_VP9_INCLUDE_VP9_GLOBALS_H_
 
-#include <assert.h>
 #include <stdint.h>
 
 #include "modules/video_coding/codecs/interface/common_constants.h"
diff --git a/modules/video_coding/frame_buffer.cc b/modules/video_coding/frame_buffer.cc
index 8f73e73bad..937534aab0 100644
--- a/modules/video_coding/frame_buffer.cc
+++ b/modules/video_coding/frame_buffer.cc
@@ -10,7 +10,6 @@
 
 #include "modules/video_coding/frame_buffer.h"
 
-#include <assert.h>
 #include <string.h>
 
 #include "api/video/encoded_image.h"
diff --git a/modules/video_coding/jitter_buffer.cc b/modules/video_coding/jitter_buffer.cc
index 75142e93ee..2352a79d17 100644
--- a/modules/video_coding/jitter_buffer.cc
+++ b/modules/video_coding/jitter_buffer.cc
@@ -9,7 +9,6 @@
  */
 #include "modules/video_coding/jitter_buffer.h"
 
-#include <assert.h>
 
 #include <algorithm>
 #include <limits>
diff --git a/modules/video_coding/jitter_estimator.cc b/modules/video_coding/jitter_estimator.cc
index 92a298c259..89cf51fe46 100644
--- a/modules/video_coding/jitter_estimator.cc
+++ b/modules/video_coding/jitter_estimator.cc
@@ -10,7 +10,6 @@
 
 #include "modules/video_coding/jitter_estimator.h"
 
-#include <assert.h>
 #include <math.h>
 #include <string.h>
 
diff --git a/modules/video_coding/media_opt_util.cc b/modules/video_coding/media_opt_util.cc
index 0136ae8ec9..01fc5fbeae 100644
--- a/modules/video_coding/media_opt_util.cc
+++ b/modules/video_coding/media_opt_util.cc
@@ -10,7 +10,6 @@
 
 #include "modules/video_coding/media_opt_util.h"
 
-#include <assert.h>
 #include <math.h>
 
 #include <algorithm>
diff --git a/modules/video_coding/receiver.cc b/modules/video_coding/receiver.cc
index 6b942fbe57..544dd237b6 100644
--- a/modules/video_coding/receiver.cc
+++ b/modules/video_coding/receiver.cc
@@ -10,7 +10,6 @@
 
 #include "modules/video_coding/receiver.h"
 
-#include <assert.h>
 
 #include <cstdint>
 #include <cstdlib>
diff --git a/modules/video_coding/session_info.cc b/modules/video_coding/session_info.cc
index 477bbbe209..150fc77c71 100644
--- a/modules/video_coding/session_info.cc
+++ b/modules/video_coding/session_info.cc
@@ -10,7 +10,6 @@
 
 #include "modules/video_coding/session_info.h"
 
-#include <assert.h>
 #include <string.h>
 
 #include <vector>
diff --git a/modules/video_coding/timing.cc b/modules/video_coding/timing.cc
index e811925c6c..748013cf47 100644
--- a/modules/video_coding/timing.cc
+++ b/modules/video_coding/timing.cc
@@ -10,7 +10,6 @@
 
 #include "modules/video_coding/timing.h"
 
-#include <assert.h>
 
 #include <algorithm>
 
diff --git a/rtc_base/third_party/base64/base64.cc b/rtc_base/third_party/base64/base64.cc
index b9acf9a4c9..7e30b0eb34 100644
--- a/rtc_base/third_party/base64/base64.cc
+++ b/rtc_base/third_party/base64/base64.cc
@@ -16,7 +16,6 @@
 
 #include "rtc_base/third_party/base64/base64.h"
 
-#include <assert.h>
 #include <string.h>
 
 #include "rtc_base/checks.h"
diff --git a/test/field_trial.cc b/test/field_trial.cc
index 80fee0c427..c40fcc36c1 100644
--- a/test/field_trial.cc
+++ b/test/field_trial.cc
@@ -11,7 +11,6 @@
 #include "test/field_trial.h"
 
 #include <algorithm>
-#include <cassert>
 #include <cstdio>
 #include <cstdlib>
 #include <map>
diff --git a/test/frame_generator_unittest.cc b/test/frame_generator_unittest.cc
index 8e5cde8c5f..bcb30b978f 100644
--- a/test/frame_generator_unittest.cc
+++ b/test/frame_generator_unittest.cc
@@ -10,7 +10,6 @@
 
 #include "test/frame_generator.h"
 
-#include <assert.h>
 #include <stdio.h>
 #include <string.h>
 
diff --git a/test/linux/glx_renderer.cc b/test/linux/glx_renderer.cc
index 04d482c88b..509a6c286e 100644
--- a/test/linux/glx_renderer.cc
+++ b/test/linux/glx_renderer.cc
@@ -12,7 +12,6 @@
 
 #include <X11/Xlib.h>
 #include <X11/Xutil.h>
-#include <assert.h>
 #include <stdlib.h>
 
 namespace webrtc {
diff --git a/test/rtp_file_reader.cc b/test/rtp_file_reader.cc
index 203cbdfeed..b3d0742bf8 100644
--- a/test/rtp_file_reader.cc
+++ b/test/rtp_file_reader.cc
@@ -10,7 +10,6 @@
 
 #include "test/rtp_file_reader.h"
 
-#include <assert.h>
 #include <stdio.h>
 
 #include <map>
diff --git a/test/testsupport/file_utils.cc b/test/testsupport/file_utils.cc
index 1f829d320b..c66f67cfa2 100644
--- a/test/testsupport/file_utils.cc
+++ b/test/testsupport/file_utils.cc
@@ -10,7 +10,6 @@
 
 #include "test/testsupport/file_utils.h"
 
-#include <assert.h>
 
 #if defined(WEBRTC_POSIX)
 #include <unistd.h>