diff --git a/webrtc/config.cc b/webrtc/config.cc
index e118a85b94..c8cb9ef840 100644
--- a/webrtc/config.cc
+++ b/webrtc/config.cc
@@ -37,7 +37,7 @@ const char* RtpExtension::kVideoRotation = "urn:3gpp:video-orientation";
 const char* RtpExtension::kAudioLevel =
     "urn:ietf:params:rtp-hdrext:ssrc-audio-level";
 const char* RtpExtension::kTransportSequenceNumber =
-    "http://www.ietf.org/id/draft-holmer-rmcat-transport-wide-cc-extensions";
+    "http://www.ietf.org/id/draft-holmer-rmcat-transport-wide-cc-extensions-01";
 
 bool RtpExtension::IsSupportedForAudio(const std::string& name) {
   return name == webrtc::RtpExtension::kAbsSendTime ||
diff --git a/webrtc/media/base/constants.cc b/webrtc/media/base/constants.cc
index e3158685d0..3443a9db3f 100644
--- a/webrtc/media/base/constants.cc
+++ b/webrtc/media/base/constants.cc
@@ -110,7 +110,7 @@ const char kRtpVideoRotation6BitsHeaderExtensionForTesting[] =
 
 const int kRtpTransportSequenceNumberHeaderExtensionDefaultId = 5;
 const char kRtpTransportSequenceNumberHeaderExtension[] =
-    "http://www.ietf.org/id/draft-holmer-rmcat-transport-wide-cc-extensions";
+    "http://www.ietf.org/id/draft-holmer-rmcat-transport-wide-cc-extensions-01";
 
 const char kVp8CodecName[] = "VP8";
 const char kVp9CodecName[] = "VP9";