diff --git a/src/content/peerconnection/trickle-ice/js/main.js b/src/content/peerconnection/trickle-ice/js/main.js
index 2ccce41b5..711f0288d 100644
--- a/src/content/peerconnection/trickle-ice/js/main.js
+++ b/src/content/peerconnection/trickle-ice/js/main.js
@@ -92,7 +92,7 @@ function start() {
   // Create a PeerConnection with no streams, but force a m=audio line.
   // This will gather candidates for either 1 or 2 ICE components, depending
   // on whether the unbundle RTCP checkbox is checked.
-  var config = {'iceServers': iceServers, iceTransports: iceTransports};
+  var config = {'iceServers': iceServers, iceTransportPolicy: iceTransports};
   var pcConstraints = {};
   var offerConstraints = {'mandatory': {'OfferToReceiveAudio': true}};
   // Whether we gather IPv6 candidates.