diff --git a/sugar/chat/GroupChat.py b/sugar/chat/GroupChat.py
index d9e723e5..ea2c4a7f 100644
--- a/sugar/chat/GroupChat.py
+++ b/sugar/chat/GroupChat.py
@@ -20,7 +20,7 @@ class GroupChat(Chat):
 		self._pservice.track_service_type(GroupChat.SERVICE_TYPE)
 		service = self._pservice.get_activity_service(activity, GroupChat.SERVICE_TYPE)
 		if service is not None:
-			self._service_appeared(self._pservice, None, service)
+			self._service_appeared_cb(self._pservice, None, service)
 
 	def _service_appeared_cb(self, pservice, buddy, service):
 		if service.get_activity_uid() == self._activity.get_id():
diff --git a/sugar/presence/PresenceService.py b/sugar/presence/PresenceService.py
index 554b22ca..a294f60b 100644
--- a/sugar/presence/PresenceService.py
+++ b/sugar/presence/PresenceService.py
@@ -136,7 +136,7 @@ class PresenceService(gobject.GObject):
 		uid = activity.get_id()
 		if self._activity_services.has_key(uid):
 			services = self._activity_services[uid]
-			for service in services:
+			for (buddy, service) in services:
 				if service.get_type() == short_stype:
 					return service
 		return None