diff --git a/p2p/base/ice_transport_internal.h b/p2p/base/ice_transport_internal.h
index 707c28a255..a0cdbbc78f 100644
--- a/p2p/base/ice_transport_internal.h
+++ b/p2p/base/ice_transport_internal.h
@@ -282,7 +282,10 @@ class RTC_EXPORT IceTransportInternal : public rtc::PacketTransportInternal {
   virtual void SetRemoteIceMode(IceMode mode) = 0;
 
   virtual void SetIceConfig(const IceConfig& config) = 0;
-  virtual const IceConfig& config() const = 0;
+  // Default implementation in order to allow downstream usage deletion.
+  // TODO: bugs.webrtc.org/367395350 - Make virutal when all downstream
+  // overrides are gone.
+  virtual const IceConfig& config() const { RTC_CHECK_NOTREACHED(); }
 
   // Start gathering candidates if not already started, or if an ICE restart
   // occurred.