diff --git a/src/common/xmpp/dispatcher_nb.py b/src/common/xmpp/dispatcher_nb.py
index 025e7cb0c..497add54f 100644
--- a/src/common/xmpp/dispatcher_nb.py
+++ b/src/common/xmpp/dispatcher_nb.py
@@ -204,6 +204,8 @@ class Dispatcher(PlugIn):
 			xmlns=self._owner.defaultNamespace
 		if not typ and not ns: 
 			typ='default'
+		if self.handlers.has_key(xmlns):
+			return
 		if not self.handlers[xmlns].has_key(name): 
 			return
 		if not self.handlers[xmlns][name].has_key(typ+ns):