--- a/media/webrtc/signaling/src/peerconnection/PeerConnectionMedia.cpp
+++ b/media/webrtc/signaling/src/peerconnection/PeerConnectionMedia.cpp
@@ -505,17 +505,18 @@ PeerConnectionMedia::ActivateOrRemoveTra
       RemoveTransportFlow(i, false);
       RemoveTransportFlow(i, true);
     }
 
     if (forceIceTcp) {
       candidates.erase(std::remove_if(candidates.begin(),
                                       candidates.end(),
                                       [](const std::string & s) {
-                                        return s.find(" UDP "); }),
+                                        return s.find(" UDP ") != std::string::npos ||
+                                               s.find(" udp ") != std::string::npos; }),
                        candidates.end());
     }
 
     RUN_ON_THREAD(
         GetSTSThread(),
         WrapRunnable(RefPtr<PeerConnectionMedia>(this),
                      &PeerConnectionMedia::ActivateOrRemoveTransport_s,
                      i,