diff --git a/webrtc/call/call.cc b/webrtc/call/call.cc
index ef3bc859d8..94acc9ff9d 100644
--- a/webrtc/call/call.cc
+++ b/webrtc/call/call.cc
@@ -392,6 +392,7 @@ Call::Call(const Call::Config& config,
       config_.bitrate_config.min_bitrate_bps,
       config_.bitrate_config.start_bitrate_bps,
       config_.bitrate_config.max_bitrate_bps);
+  call_stats_->RegisterStatsObserver(&receive_side_cc_);
   call_stats_->RegisterStatsObserver(transport_send_->send_side_cc());
 
   module_process_thread_->Start();
@@ -426,6 +427,7 @@ Call::~Call() {
   module_process_thread_->DeRegisterModule(&receive_side_cc_);
   module_process_thread_->DeRegisterModule(call_stats_.get());
   module_process_thread_->Stop();
+  call_stats_->DeregisterStatsObserver(&receive_side_cc_);
   call_stats_->DeregisterStatsObserver(transport_send_->send_side_cc());
 
   // Only update histograms after process threads have been shut down, so that
diff --git a/webrtc/modules/congestion_controller/include/receive_side_congestion_controller.h b/webrtc/modules/congestion_controller/include/receive_side_congestion_controller.h
index f6f9462394..1d205b59c5 100644
--- a/webrtc/modules/congestion_controller/include/receive_side_congestion_controller.h
+++ b/webrtc/modules/congestion_controller/include/receive_side_congestion_controller.h
@@ -46,7 +46,6 @@ class ReceiveSideCongestionController : public CallStatsObserver,
   virtual const RemoteBitrateEstimator* GetRemoteBitrateEstimator(
       bool send_side_bwe) const;
 
-  // TODO(nisse): Called by CongestionController, but not otherwise wired up.
   // Implements CallStatsObserver.
   void OnRttUpdate(int64_t avg_rtt_ms, int64_t max_rtt_ms) override;