diff --git a/audio/audio_receive_stream.cc b/audio/audio_receive_stream.cc
index 2e02388..7c6adcd 100644
--- a/audio/audio_receive_stream.cc
+++ b/audio/audio_receive_stream.cc
@@ -295,7 +295,7 @@
   return channel_receive_->PreferredSampleRate();
 }
 
-int AudioReceiveStream::id() const {
+uint32_t AudioReceiveStream::id() const {
   RTC_DCHECK_RUN_ON(&worker_thread_checker_);
   return config_.rtp.remote_ssrc;
 }