diff --git a/modules/rtp_rtcp/source/rtp_rtcp_impl2_unittest.cc b/modules/rtp_rtcp/source/rtp_rtcp_impl2_unittest.cc
index 950bcb9bc4..d183c5bebc 100644
--- a/modules/rtp_rtcp/source/rtp_rtcp_impl2_unittest.cc
+++ b/modules/rtp_rtcp/source/rtp_rtcp_impl2_unittest.cc
@@ -442,10 +442,10 @@ TEST_F(RtpRtcpImpl2Test, Rtt) {
 }
 
 TEST_F(RtpRtcpImpl2Test, RttForReceiverOnly) {
-  // Receiver module should send a Receiver time reference report (RTRR).
+  // Receiver module should send a Receiver reference time report block (RRTR).
   EXPECT_EQ(0, receiver_.impl_->SendRTCP(kRtcpReport));
 
-  // Sender module should send a response to the last received RTRR (DLRR).
+  // Sender module should send a response to the last received RRTR (DLRR).
   AdvanceTime(TimeDelta::Millis(1000));
   // Send Frame before sending a SR.
   EXPECT_TRUE(SendFrame(&sender_, sender_video_.get(), kBaseLayerTid));
diff --git a/modules/rtp_rtcp/source/rtp_rtcp_impl_unittest.cc b/modules/rtp_rtcp/source/rtp_rtcp_impl_unittest.cc
index 2c05827cb5..4875ee96e0 100644
--- a/modules/rtp_rtcp/source/rtp_rtcp_impl_unittest.cc
+++ b/modules/rtp_rtcp/source/rtp_rtcp_impl_unittest.cc
@@ -309,10 +309,10 @@ TEST_F(RtpRtcpImplTest, Rtt) {
 }
 
 TEST_F(RtpRtcpImplTest, RttForReceiverOnly) {
-  // Receiver module should send a Receiver time reference report (RTRR).
+  // Receiver module should send a Receiver reference time report block (RRTR).
   EXPECT_EQ(0, receiver_.impl_->SendRTCP(kRtcpReport));
 
-  // Sender module should send a response to the last received RTRR (DLRR).
+  // Sender module should send a response to the last received RRTR (DLRR).
   clock_.AdvanceTimeMilliseconds(1000);
   // Send Frame before sending a SR.
   SendFrame(&sender_, sender_video_.get(), kBaseLayerTid);