diff --git a/modules/remote_bitrate_estimator/remote_estimator_proxy.cc b/modules/remote_bitrate_estimator/remote_estimator_proxy.cc
index e100995b8e..6953ec8400 100644
--- a/modules/remote_bitrate_estimator/remote_estimator_proxy.cc
+++ b/modules/remote_bitrate_estimator/remote_estimator_proxy.cc
@@ -260,8 +260,11 @@ void RemoteEstimatorProxy::SendFeedbackOnRequest(
       feedback_request.include_timestamps, first_sequence_number,
       sequence_number + 1, /*is_periodic_update=*/false);
 
-  // This is called when a packet has just been added.
-  RTC_DCHECK(feedback_packet != nullptr);
+  // Even though this is called when a packet has just been added,
+  // no feedback may be produced when that new packet is too old.
+  if (feedback_packet == nullptr) {
+    return;
+  }
 
   // Clear up to the first packet that is included in this feedback packet.
   packet_arrival_times_.EraseTo(first_sequence_number);
diff --git a/test/fuzzers/BUILD.gn b/test/fuzzers/BUILD.gn
index 43e9a5e922..4384c315b9 100644
--- a/test/fuzzers/BUILD.gn
+++ b/test/fuzzers/BUILD.gn
@@ -248,6 +248,7 @@ webrtc_fuzzer_test("receive_side_congestion_controller_fuzzer") {
     "../../modules/rtp_rtcp:rtp_rtcp_format",
     "../../system_wrappers",
   ]
+  seed_corpus = "corpora/receive-side-cc"
 }
 
 rtc_library("audio_decoder_fuzzer") {
diff --git a/test/fuzzers/corpora/receive-side-cc/testcase-5414098152390656 b/test/fuzzers/corpora/receive-side-cc/testcase-5414098152390656
new file mode 100644
index 0000000000..98c423cdc2
Binary files /dev/null and b/test/fuzzers/corpora/receive-side-cc/testcase-5414098152390656 differ