diff --git a/webrtc/modules/audio_coding/main/acm2/acm_receiver.cc b/webrtc/modules/audio_coding/main/acm2/acm_receiver.cc
index 01d9a1040f..209d81618d 100644
--- a/webrtc/modules/audio_coding/main/acm2/acm_receiver.cc
+++ b/webrtc/modules/audio_coding/main/acm2/acm_receiver.cc
@@ -533,21 +533,6 @@ int AcmReceiver::last_audio_codec_id() const {
   return last_audio_decoder_ ? last_audio_decoder_->acm_codec_id : -1;
 }
 
-int AcmReceiver::RedPayloadType() const {
-  const auto red_index =
-      RentACodec::CodecIndexFromId(RentACodec::CodecId::kRED);
-  if (red_index) {
-    CriticalSectionScoped lock(crit_sect_.get());
-    for (const auto& decoder_pair : decoders_) {
-      const Decoder& decoder = decoder_pair.second;
-      if (decoder.acm_codec_id == *red_index)
-        return decoder.payload_type;
-    }
-  }
-  LOG(WARNING) << "RED is not registered.";
-  return -1;
-}
-
 int AcmReceiver::LastAudioCodec(CodecInst* codec) const {
   CriticalSectionScoped lock(crit_sect_.get());
   if (!last_audio_decoder_) {
diff --git a/webrtc/modules/audio_coding/main/acm2/acm_receiver.h b/webrtc/modules/audio_coding/main/acm2/acm_receiver.h
index 4775b8c6d9..aee9154835 100644
--- a/webrtc/modules/audio_coding/main/acm2/acm_receiver.h
+++ b/webrtc/modules/audio_coding/main/acm2/acm_receiver.h
@@ -244,11 +244,6 @@ class AcmReceiver {
   //
   int LastAudioCodec(CodecInst* codec) const;
 
-  //
-  // Return payload type of RED if it is registered, otherwise return -1;
-  //
-  int RedPayloadType() const;
-
   //
   // Get a decoder given its registered payload-type.
   //