diff --git a/modules/rtp_rtcp/source/flexfec_receiver.cc b/modules/rtp_rtcp/source/flexfec_receiver.cc
index ec35a2c063..a9a144c87a 100644
--- a/modules/rtp_rtcp/source/flexfec_receiver.cc
+++ b/modules/rtp_rtcp/source/flexfec_receiver.cc
@@ -10,6 +10,7 @@
 
 #include "modules/rtp_rtcp/include/flexfec_receiver.h"
 
+#include "rtc_base/checks.h"
 #include "rtc_base/logging.h"
 #include "rtc_base/scoped_ref_ptr.h"
 
@@ -129,6 +130,7 @@ void FlexfecReceiver::ProcessReceivedPacket(
 
   // Return recovered packets through callback.
   for (const auto& recovered_packet : recovered_packets_) {
+    RTC_CHECK(recovered_packet);
     if (recovered_packet->returned) {
       continue;
     }
@@ -136,6 +138,7 @@ void FlexfecReceiver::ProcessReceivedPacket(
     // Set this flag first, since OnRecoveredPacket may end up here
     // again, with the same packet.
     recovered_packet->returned = true;
+    RTC_CHECK(recovered_packet->pkt);
     recovered_packet_receiver_->OnRecoveredPacket(
         recovered_packet->pkt->data, recovered_packet->pkt->length);
     // Periodically log the incoming packets.