diff -r 933fbe9a5e2c -r 866fb3ab8778 connectors/WAMP/__init__.py
--- a/connectors/WAMP/__init__.py	Fri Oct 13 13:17:42 2017 +0300
+++ b/connectors/WAMP/__init__.py	Mon Oct 16 17:20:31 2017 +0300
@@ -138,7 +138,7 @@
                 _WampConnection = threads.blockingCallFromThread(
                     reactor, RegisterWampClient)
             if not _WampSessionEvent.wait(5):
-                _WampConnection = stopConnecting()
+                _WampConnection.stopConnecting()
                 raise Exception(_("WAMP connection timeout"))
 
         def __del__(self):