--- a/media/mtransport/nricemediastream.cpp
+++ b/media/mtransport/nricemediastream.cpp
@@ -86,17 +86,21 @@ static bool ToNrIceAddr(nr_transport_add
   r = nr_transport_addr_get_port(&addr, &port);
   if (r)
     return false;
 
   out->port = port;
 
   switch (addr.protocol) {
     case IPPROTO_TCP:
-      out->transport = kNrIceTransportTcp;
+      if (addr.tls_host[0] != '\0') {
+        out->transport = kNrIceTransportTls;
+      } else {
+        out->transport = kNrIceTransportTcp;
+      }
       break;
     case IPPROTO_UDP:
       out->transport = kNrIceTransportUdp;
       break;
     default:
       MOZ_CRASH();
       return false;
   }