diff --git a/webrtc/modules/rtp_rtcp/source/producer_fec.cc b/webrtc/modules/rtp_rtcp/source/producer_fec.cc
index b928020df3..941773e6e3 100644
--- a/webrtc/modules/rtp_rtcp/source/producer_fec.cc
+++ b/webrtc/modules/rtp_rtcp/source/producer_fec.cc
@@ -57,7 +57,7 @@ void RedPacket::CreateHeader(const uint8_t* rtp_header,
                              size_t header_length,
                              int red_payload_type,
                              int payload_type) {
-  RTC_DCHECK_LT(header_length + kRedForFecHeaderLength, length_);
+  RTC_DCHECK_LE(header_length + kRedForFecHeaderLength, length_);
   memcpy(data_.get(), rtp_header, header_length);
   // Replace payload type.
   data_[1] &= 0x80;
diff --git a/webrtc/modules/rtp_rtcp/source/producer_fec_unittest.cc b/webrtc/modules/rtp_rtcp/source/producer_fec_unittest.cc
index 8b84cf5712..e3a49b43cc 100644
--- a/webrtc/modules/rtp_rtcp/source/producer_fec_unittest.cc
+++ b/webrtc/modules/rtp_rtcp/source/producer_fec_unittest.cc
@@ -185,4 +185,22 @@ TEST_F(ProducerFecTest, BuildRedPacket) {
   delete packet;
 }
 
+TEST_F(ProducerFecTest, BuildRedPacketWithEmptyPayload) {
+  constexpr size_t kNumFrames = 1;
+  constexpr size_t kPayloadLength = 0;
+  constexpr size_t kRedForFecHeaderLength = 1;
+
+  generator_.NewFrame(kNumFrames);
+  std::unique_ptr<test::RawRtpPacket> packet(
+      generator_.NextPacket(0, kPayloadLength));
+  std::unique_ptr<RedPacket> red_packet =
+      ProducerFec::BuildRedPacket(packet->data, packet->length - kRtpHeaderSize,
+                                  kRtpHeaderSize, kRedPayloadType);
+  EXPECT_EQ(packet->length + kRedForFecHeaderLength, red_packet->length());
+  VerifyHeader(packet->header.header.sequenceNumber,
+               packet->header.header.timestamp, kRedPayloadType,
+               packet->header.header.payloadType, red_packet.get(),
+               true);  // Marker bit set.
+}
+
 }  // namespace webrtc