diff --git a/talk/app/webrtc/webrtcsdp.cc b/talk/app/webrtc/webrtcsdp.cc
index 908b11d23d..b2b33fa27d 100644
--- a/talk/app/webrtc/webrtcsdp.cc
+++ b/talk/app/webrtc/webrtcsdp.cc
@@ -1185,12 +1185,6 @@ bool ParseExtmap(const std::string& line, RtpHeaderExtension* extmap,
   return true;
 }
 
-static bool IsSctp(const std::string& protocol) {
-  return protocol == cricket::kMediaProtocolDtlsSctp
-    || protocol == cricket::kMediaProtocolUdpDtlsSctp
-    || protocol == cricket::kMediaProtocolSctp;
-}
-
 void BuildMediaDescription(const ContentInfo* content_info,
                            const TransportInfo* transport_info,
                            const MediaType media_type,
@@ -1827,8 +1821,7 @@ bool IsRtp(const std::string& protocol) {
 
 bool IsDtlsSctp(const std::string& protocol) {
   // This intentionally excludes "SCTP" and "SCTP/DTLS".
-  return protocol.find(cricket::kMediaProtocolDtlsSctp) != std::string::npos
-    || protocol.find(cricket::kMediaProtocolUdpDtlsSctp) != std::string::npos;
+  return protocol.find(cricket::kMediaProtocolDtlsSctp) != std::string::npos;
 }
 
 bool ParseSessionDescription(const std::string& message, size_t* pos,
diff --git a/talk/session/media/mediasession.cc b/talk/session/media/mediasession.cc
index e33dfc668f..831527907a 100644
--- a/talk/session/media/mediasession.cc
+++ b/talk/session/media/mediasession.cc
@@ -72,6 +72,7 @@ const char kMediaProtocolRtpPrefix[] = "RTP/";
 const char kMediaProtocolSctp[] = "SCTP";
 const char kMediaProtocolDtlsSctp[] = "DTLS/SCTP";
 const char kMediaProtocolUdpDtlsSctp[] = "UDP/DTLS/SCTP";
+const char kMediaProtocolTcpDtlsSctp[] = "TCP/DTLS/SCTP";
 
 static bool IsMediaContentOfType(const ContentInfo* content,
                                  MediaType media_type) {
diff --git a/talk/session/media/mediasession.h b/talk/session/media/mediasession.h
index bb973aaed4..5bcc8cc55b 100644
--- a/talk/session/media/mediasession.h
+++ b/talk/session/media/mediasession.h
@@ -87,6 +87,7 @@ extern const char kMediaProtocolRtpPrefix[];
 extern const char kMediaProtocolSctp[];
 extern const char kMediaProtocolDtlsSctp[];
 extern const char kMediaProtocolUdpDtlsSctp[];
+extern const char kMediaProtocolTcpDtlsSctp[];
 
 // Options to control how session descriptions are generated.
 const int kAutoBandwidth = -1;