diff --git a/modules/rtp_rtcp/include/ulpfec_receiver.h b/modules/rtp_rtcp/include/ulpfec_receiver.h
index 6cbae52c99..38957c3f84 100644
--- a/modules/rtp_rtcp/include/ulpfec_receiver.h
+++ b/modules/rtp_rtcp/include/ulpfec_receiver.h
@@ -49,7 +49,7 @@ class UlpfecReceiver {
 
   // Sends the received packets to the FEC and returns all packets
   // (both original media and recovered) through the callback.
-  virtual int32_t ProcessReceivedFec() = 0;
+  virtual void ProcessReceivedFec() = 0;
 
   // Returns a counter describing the added and recovered packets.
   virtual FecPacketCounter GetPacketCounter() const = 0;
diff --git a/modules/rtp_rtcp/source/ulpfec_receiver_impl.cc b/modules/rtp_rtcp/source/ulpfec_receiver_impl.cc
index 736ccfbf6a..1e52822614 100644
--- a/modules/rtp_rtcp/source/ulpfec_receiver_impl.cc
+++ b/modules/rtp_rtcp/source/ulpfec_receiver_impl.cc
@@ -159,8 +159,7 @@ bool UlpfecReceiverImpl::AddReceivedRedPacket(
   return true;
 }
 
-// TODO(nisse): Drop always-zero return value.
-int32_t UlpfecReceiverImpl::ProcessReceivedFec() {
+void UlpfecReceiverImpl::ProcessReceivedFec() {
   RTC_DCHECK_RUN_ON(&sequence_checker_);
 
   // If we iterate over `received_packets_` and it contains a packet that cause
@@ -219,8 +218,6 @@ int32_t UlpfecReceiverImpl::ProcessReceivedFec() {
     recovered_packet_callback_->OnRecoveredPacket(packet->data.data(),
                                                   packet->data.size());
   }
-
-  return 0;
 }
 
 }  // namespace webrtc
diff --git a/modules/rtp_rtcp/source/ulpfec_receiver_impl.h b/modules/rtp_rtcp/source/ulpfec_receiver_impl.h
index 92e51530b8..133967c9aa 100644
--- a/modules/rtp_rtcp/source/ulpfec_receiver_impl.h
+++ b/modules/rtp_rtcp/source/ulpfec_receiver_impl.h
@@ -37,7 +37,7 @@ class UlpfecReceiverImpl : public UlpfecReceiver {
   bool AddReceivedRedPacket(const RtpPacketReceived& rtp_packet,
                             uint8_t ulpfec_payload_type) override;
 
-  int32_t ProcessReceivedFec() override;
+  void ProcessReceivedFec() override;
 
   FecPacketCounter GetPacketCounter() const override;
 
diff --git a/modules/rtp_rtcp/source/ulpfec_receiver_unittest.cc b/modules/rtp_rtcp/source/ulpfec_receiver_unittest.cc
index b16ef3d6b5..4537d5d7aa 100644
--- a/modules/rtp_rtcp/source/ulpfec_receiver_unittest.cc
+++ b/modules/rtp_rtcp/source/ulpfec_receiver_unittest.cc
@@ -164,7 +164,7 @@ void UlpfecReceiverTest::InjectGarbagePacketLength(size_t fec_garbage_offset) {
   // packet to cause a recovery from the FEC packet.
   BuildAndAddRedMediaPacket(augmented_media_packets.front());
   BuildAndAddRedFecPacket(fec_packets.front());
-  EXPECT_EQ(0, receiver_fec_->ProcessReceivedFec());
+  receiver_fec_->ProcessReceivedFec();
 
   FecPacketCounter counter = receiver_fec_->GetPacketCounter();
   EXPECT_EQ(2U, counter.num_packets);
@@ -200,7 +200,7 @@ TEST_F(UlpfecReceiverTest, TwoMediaOneFec) {
   auto it = augmented_media_packets.begin();
   BuildAndAddRedMediaPacket(*it);
   VerifyReconstructedMediaPacket(**it, 1);
-  EXPECT_EQ(0, receiver_fec_->ProcessReceivedFec());
+  receiver_fec_->ProcessReceivedFec();
   counter = receiver_fec_->GetPacketCounter();
   EXPECT_EQ(1u, counter.num_packets);
   EXPECT_EQ(0u, counter.num_fec_packets);
@@ -213,7 +213,7 @@ TEST_F(UlpfecReceiverTest, TwoMediaOneFec) {
   BuildAndAddRedFecPacket(*fec_it);
   ++it;
   VerifyReconstructedMediaPacket(**it, 1);
-  EXPECT_EQ(0, receiver_fec_->ProcessReceivedFec());
+  receiver_fec_->ProcessReceivedFec();
 
   counter = receiver_fec_->GetPacketCounter();
   EXPECT_EQ(2u, counter.num_packets);
@@ -238,7 +238,7 @@ TEST_F(UlpfecReceiverTest, TwoMediaOneFecNotUsesRecoveredPackets) {
   auto it = augmented_media_packets.begin();
   BuildAndAddRedMediaPacket(*it, /*is_recovered=*/true);
   VerifyReconstructedMediaPacket(**it, 1);
-  EXPECT_EQ(0, receiver_fec_->ProcessReceivedFec());
+  receiver_fec_->ProcessReceivedFec();
   counter = receiver_fec_->GetPacketCounter();
   EXPECT_EQ(1u, counter.num_packets);
   EXPECT_EQ(0u, counter.num_fec_packets);
@@ -250,7 +250,7 @@ TEST_F(UlpfecReceiverTest, TwoMediaOneFecNotUsesRecoveredPackets) {
   auto fec_it = fec_packets.begin();
   BuildAndAddRedFecPacket(*fec_it);
   ++it;
-  EXPECT_EQ(0, receiver_fec_->ProcessReceivedFec());
+  receiver_fec_->ProcessReceivedFec();
 
   counter = receiver_fec_->GetPacketCounter();
   EXPECT_EQ(2u, counter.num_packets);
@@ -284,12 +284,12 @@ TEST_F(UlpfecReceiverTest, TwoMediaTwoFec) {
   auto fec_it = fec_packets.begin();
   BuildAndAddRedFecPacket(*fec_it);
   VerifyReconstructedMediaPacket(**it, 1);
-  EXPECT_EQ(0, receiver_fec_->ProcessReceivedFec());
+  receiver_fec_->ProcessReceivedFec();
   ++fec_it;
   BuildAndAddRedFecPacket(*fec_it);
   ++it;
   VerifyReconstructedMediaPacket(**it, 1);
-  EXPECT_EQ(0, receiver_fec_->ProcessReceivedFec());
+  receiver_fec_->ProcessReceivedFec();
 }
 
 TEST_F(UlpfecReceiverTest, TwoFramesOneFec) {
@@ -305,12 +305,12 @@ TEST_F(UlpfecReceiverTest, TwoFramesOneFec) {
   auto it = augmented_media_packets.begin();
   BuildAndAddRedMediaPacket(augmented_media_packets.front());
   VerifyReconstructedMediaPacket(**it, 1);
-  EXPECT_EQ(0, receiver_fec_->ProcessReceivedFec());
+  receiver_fec_->ProcessReceivedFec();
   // Drop one media packet.
   BuildAndAddRedFecPacket(fec_packets.front());
   ++it;
   VerifyReconstructedMediaPacket(**it, 1);
-  EXPECT_EQ(0, receiver_fec_->ProcessReceivedFec());
+  receiver_fec_->ProcessReceivedFec();
 }
 
 TEST_F(UlpfecReceiverTest, OneCompleteOneUnrecoverableFrame) {
@@ -327,11 +327,11 @@ TEST_F(UlpfecReceiverTest, OneCompleteOneUnrecoverableFrame) {
   auto it = augmented_media_packets.begin();
   BuildAndAddRedMediaPacket(*it);  // First frame: one packet.
   VerifyReconstructedMediaPacket(**it, 1);
-  EXPECT_EQ(0, receiver_fec_->ProcessReceivedFec());
+  receiver_fec_->ProcessReceivedFec();
   ++it;
   BuildAndAddRedMediaPacket(*it);  // First packet of second frame.
   VerifyReconstructedMediaPacket(**it, 1);
-  EXPECT_EQ(0, receiver_fec_->ProcessReceivedFec());
+  receiver_fec_->ProcessReceivedFec();
 }
 
 TEST_F(UlpfecReceiverTest, MaxFramesOneFec) {
@@ -351,12 +351,12 @@ TEST_F(UlpfecReceiverTest, MaxFramesOneFec) {
   for (; it != augmented_media_packets.end(); ++it) {
     BuildAndAddRedMediaPacket(*it);
     VerifyReconstructedMediaPacket(**it, 1);
-    EXPECT_EQ(0, receiver_fec_->ProcessReceivedFec());
+    receiver_fec_->ProcessReceivedFec();
   }
   BuildAndAddRedFecPacket(fec_packets.front());
   it = augmented_media_packets.begin();
   VerifyReconstructedMediaPacket(**it, 1);
-  EXPECT_EQ(0, receiver_fec_->ProcessReceivedFec());
+  receiver_fec_->ProcessReceivedFec();
 }
 
 TEST_F(UlpfecReceiverTest, TooManyFrames) {
@@ -388,7 +388,7 @@ TEST_F(UlpfecReceiverTest, PacketNotDroppedTooEarly) {
 
   BuildAndAddRedMediaPacket(augmented_media_packets_batch1.front());
   EXPECT_CALL(recovered_packet_receiver_, OnRecoveredPacket(_, _)).Times(1);
-  EXPECT_EQ(0, receiver_fec_->ProcessReceivedFec());
+  receiver_fec_->ProcessReceivedFec();
   delayed_fec = fec_packets.front();
 
   // Fill the FEC decoder. No packets should be dropped.
@@ -403,13 +403,13 @@ TEST_F(UlpfecReceiverTest, PacketNotDroppedTooEarly) {
        it != augmented_media_packets_batch2.end(); ++it) {
     BuildAndAddRedMediaPacket(*it);
     EXPECT_CALL(recovered_packet_receiver_, OnRecoveredPacket(_, _)).Times(1);
-    EXPECT_EQ(0, receiver_fec_->ProcessReceivedFec());
+    receiver_fec_->ProcessReceivedFec();
   }
 
   // Add the delayed FEC packet. One packet should be reconstructed.
   BuildAndAddRedFecPacket(delayed_fec);
   EXPECT_CALL(recovered_packet_receiver_, OnRecoveredPacket(_, _)).Times(1);
-  EXPECT_EQ(0, receiver_fec_->ProcessReceivedFec());
+  receiver_fec_->ProcessReceivedFec();
 }
 
 TEST_F(UlpfecReceiverTest, PacketDroppedWhenTooOld) {
@@ -427,7 +427,7 @@ TEST_F(UlpfecReceiverTest, PacketDroppedWhenTooOld) {
 
   BuildAndAddRedMediaPacket(augmented_media_packets_batch1.front());
   EXPECT_CALL(recovered_packet_receiver_, OnRecoveredPacket(_, _)).Times(1);
-  EXPECT_EQ(0, receiver_fec_->ProcessReceivedFec());
+  receiver_fec_->ProcessReceivedFec();
   delayed_fec = fec_packets.front();
 
   // Fill the FEC decoder and force the last packet to be dropped.
@@ -442,14 +442,14 @@ TEST_F(UlpfecReceiverTest, PacketDroppedWhenTooOld) {
        it != augmented_media_packets_batch2.end(); ++it) {
     BuildAndAddRedMediaPacket(*it);
     EXPECT_CALL(recovered_packet_receiver_, OnRecoveredPacket(_, _)).Times(1);
-    EXPECT_EQ(0, receiver_fec_->ProcessReceivedFec());
+    receiver_fec_->ProcessReceivedFec();
   }
 
   // Add the delayed FEC packet. No packet should be reconstructed since the
   // first media packet of that frame has been dropped due to being too old.
   BuildAndAddRedFecPacket(delayed_fec);
   EXPECT_CALL(recovered_packet_receiver_, OnRecoveredPacket(_, _)).Times(0);
-  EXPECT_EQ(0, receiver_fec_->ProcessReceivedFec());
+  receiver_fec_->ProcessReceivedFec();
 }
 
 TEST_F(UlpfecReceiverTest, OldFecPacketDropped) {
@@ -468,7 +468,7 @@ TEST_F(UlpfecReceiverTest, OldFecPacketDropped) {
       // Only FEC packets inserted. No packets recoverable at this time.
       BuildAndAddRedFecPacket(*it);
       EXPECT_CALL(recovered_packet_receiver_, OnRecoveredPacket(_, _)).Times(0);
-      EXPECT_EQ(0, receiver_fec_->ProcessReceivedFec());
+      receiver_fec_->ProcessReceivedFec();
     }
     // Move unique_ptr's to media_packets for lifetime management.
     media_packets.insert(media_packets.end(),
@@ -483,7 +483,7 @@ TEST_F(UlpfecReceiverTest, OldFecPacketDropped) {
   // returned.
   BuildAndAddRedMediaPacket(augmented_media_packets.front());
   EXPECT_CALL(recovered_packet_receiver_, OnRecoveredPacket(_, _)).Times(1);
-  EXPECT_EQ(0, receiver_fec_->ProcessReceivedFec());
+  receiver_fec_->ProcessReceivedFec();
 }
 
 TEST_F(UlpfecReceiverTest, TruncatedPacketWithFBitSet) {
@@ -531,12 +531,12 @@ TEST_F(UlpfecReceiverTest, MediaWithPadding) {
   BuildAndAddRedMediaPacket(augmented_media_packets.front());
 
   VerifyReconstructedMediaPacket(**it, 1);
-  EXPECT_EQ(0, receiver_fec_->ProcessReceivedFec());
+  receiver_fec_->ProcessReceivedFec();
 
   BuildAndAddRedFecPacket(fec_packets.front());
   ++it;
   VerifyReconstructedMediaPacket(**it, 1);
-  EXPECT_EQ(0, receiver_fec_->ProcessReceivedFec());
+  receiver_fec_->ProcessReceivedFec();
 }
 
 }  // namespace webrtc