--- a/media/webrtc/signaling/src/peerconnection/PeerConnectionImpl.cpp
+++ b/media/webrtc/signaling/src/peerconnection/PeerConnectionImpl.cpp
@@ -1100,17 +1100,17 @@ PeerConnectionImpl::EnsureDataConnection
     // and we increase the number of streams dynamically as needed.
     return NS_OK;
   }
 
   nsCOMPtr<nsIEventTarget> target = mWindow
       ? mWindow->EventTargetFor(TaskCategory::Other)
       : nullptr;
   mDataConnection = new DataChannelConnection(this, target);
-  if (!mDataConnection->Init(5000, aNumstreams, aMMSSet, aMaxMessageSize)) {
+  if (!mDataConnection->Init(aLocalPort, aNumstreams, aMMSSet, aMaxMessageSize)) {
     CSFLogError(logTag,"%s DataConnection Init Failed",__FUNCTION__);
     return NS_ERROR_FAILURE;
   }
   CSFLogDebug(logTag,"%s DataChannelConnection %p attached to %s",
               __FUNCTION__, (void*) mDataConnection.get(), mHandle.c_str());
   return NS_OK;
 }