diff --git a/modules/congestion_controller/rtp/send_side_congestion_controller.cc b/modules/congestion_controller/rtp/send_side_congestion_controller.cc
index a75c1bc0fb..ace522cb46 100644
--- a/modules/congestion_controller/rtp/send_side_congestion_controller.cc
+++ b/modules/congestion_controller/rtp/send_side_congestion_controller.cc
@@ -236,7 +236,9 @@ void ControlHandler::PostUpdates(NetworkControlUpdate update) {
   RTC_DCHECK_CALLED_SEQUENTIALLY(&sequenced_checker_);
   if (update.congestion_window) {
     congestion_window_ = update.congestion_window;
-    pacer_controller_->OnCongestionWindow(*update.congestion_window);
+    if (!congestion_window_pushback_experiment_) {
+      pacer_controller_->OnCongestionWindow(*update.congestion_window);
+    }
   }
   if (update.pacer_config) {
     pacer_controller_->OnPacerConfig(*update.pacer_config);