diff --git a/src/core/xmpp.py b/src/core/xmpp.py
index a570b3cc..c318def8 100644
--- a/src/core/xmpp.py
+++ b/src/core/xmpp.py
@@ -280,7 +280,7 @@ class SatRosterProtocol(xmppim.RosterClientProtocol):
         try:
             return self._groups[group]
         except KeyError:
-            return exceptions.UnknownGroupError
+            raise exceptions.UnknownGroupError
 
 
 class SatPresenceProtocol(xmppim.PresenceClientProtocol):