diff --git a/tools_webrtc/ios/internal.client.webrtc/iOS64_Debug.json b/tools_webrtc/ios/internal.client.webrtc/iOS64_Debug.json
index 8f49da666c..551035ed85 100644
--- a/tools_webrtc/ios/internal.client.webrtc/iOS64_Debug.json
+++ b/tools_webrtc/ios/internal.client.webrtc/iOS64_Debug.json
@@ -5,7 +5,6 @@
   "xcode version": "8.0",
   "gn_args": [
     "goma_dir=\"$(goma_dir)\"",
-    "additional_target_cpus=[\"arm\"]",
     "is_component_build=false",
     "is_debug=true",
     "target_cpu=\"arm64\"",
diff --git a/tools_webrtc/ios/internal.tryserver.webrtc/ios_arm64.json b/tools_webrtc/ios/internal.tryserver.webrtc/ios_arm64.json
index 6f3d0b781d..d157a2e459 100644
--- a/tools_webrtc/ios/internal.tryserver.webrtc/ios_arm64.json
+++ b/tools_webrtc/ios/internal.tryserver.webrtc/ios_arm64.json
@@ -5,7 +5,6 @@
   "xcode version": "8.0",
   "gn_args": [
     "goma_dir=\"$(goma_dir)\"",
-    "additional_target_cpus=[\"arm\"]",
     "is_component_build=false",
     "is_debug=true",
     "target_cpu=\"arm64\"",