diff --git a/api/rtptransceiverinterface.cc b/api/rtptransceiverinterface.cc
index 065ac04977..d833339fa6 100644
--- a/api/rtptransceiverinterface.cc
+++ b/api/rtptransceiverinterface.cc
@@ -23,4 +23,9 @@ RtpTransceiverInterface::fired_direction() const {
   return absl::nullopt;
 }
 
+void RtpTransceiverInterface::SetCodecPreferences(
+    rtc::ArrayView<RtpCodecCapability>) {
+  RTC_NOTREACHED() << "Not implemented";
+}
+
 }  // namespace webrtc
diff --git a/api/rtptransceiverinterface.h b/api/rtptransceiverinterface.h
index 4c22957b79..301a3809f8 100644
--- a/api/rtptransceiverinterface.h
+++ b/api/rtptransceiverinterface.h
@@ -126,8 +126,7 @@ class RtpTransceiverInterface : public rtc::RefCountInterface {
   // by WebRTC for this transceiver.
   // https://w3c.github.io/webrtc-pc/#dom-rtcrtptransceiver-setcodecpreferences
   // TODO(steveanton): Not implemented.
-  virtual void SetCodecPreferences(
-      rtc::ArrayView<RtpCodecCapability> codecs) = 0;
+  virtual void SetCodecPreferences(rtc::ArrayView<RtpCodecCapability> codecs);
 
  protected:
   ~RtpTransceiverInterface() override = default;