--- a/tests/wamp/.crossbar/config.json	Thu Feb 05 23:32:31 2015 +0100
+++ b/tests/wamp/.crossbar/config.json	Sun Feb 08 16:50:54 2015 +0100
@@ -34,7 +34,8 @@
                   "type": "tcp",
                   "port": 8888
                },
-               "url": "ws://127.0.0.1:8888/"
+               "url": "ws://127.0.0.1:8888/",
+               "serializers" : ["msgpack"]
             }
          ]
       }