diff --git a/audio/channel_send.cc b/audio/channel_send.cc
index abdb9807d9..a8b93ccd2a 100644
--- a/audio/channel_send.cc
+++ b/audio/channel_send.cc
@@ -641,6 +641,7 @@ void ChannelSend::ModifyEncoder(
 }
 
 void ChannelSend::SetBitRate(int bitrate_bps, int64_t probing_interval_ms) {
+  rtc::CritScope lock(&bitrate_crit_section_);
   audio_coding_->ModifyEncoder([&](std::unique_ptr<AudioEncoder>* encoder) {
     if (*encoder) {
       (*encoder)->OnReceivedUplinkBandwidth(bitrate_bps, probing_interval_ms);
@@ -651,6 +652,7 @@ void ChannelSend::SetBitRate(int bitrate_bps, int64_t probing_interval_ms) {
 }
 
 int ChannelSend::GetBitRate() const {
+  rtc::CritScope lock(&bitrate_crit_section_);
   return configured_bitrate_bps_;
 }
 
diff --git a/audio/channel_send.h b/audio/channel_send.h
index 6fefd281d0..63e8d04e86 100644
--- a/audio/channel_send.h
+++ b/audio/channel_send.h
@@ -324,7 +324,9 @@ class ChannelSend
   rtc::scoped_refptr<FrameEncryptorInterface> frame_encryptor_;
   // E2EE Frame Encryption Options
   webrtc::CryptoOptions crypto_options_;
-  int configured_bitrate_bps_ = 0;
+
+  rtc::CriticalSection bitrate_crit_section_;
+  int configured_bitrate_bps_ RTC_GUARDED_BY(bitrate_crit_section_) = 0;
 };
 
 }  // namespace voe