diff --git a/src/common/xmpp/dispatcher_nb.py b/src/common/xmpp/dispatcher_nb.py
index 9f05282f1..30eb811b0 100644
--- a/src/common/xmpp/dispatcher_nb.py
+++ b/src/common/xmpp/dispatcher_nb.py
@@ -135,6 +135,7 @@ class Dispatcher(PlugIn):
 				self._owner.Connection.disconnect()
 				return 0
 		except ExpatError:
+			sys.exc_clear()
 			self.DEBUG('Invalid XML received from server. Forcing disconnect.', 'error')
 			self._owner.Connection.pollend()
 			return 0