--- a/server/test/unittest_ldapsource.py	Wed Apr 09 18:14:45 2014 +0200
+++ b/server/test/unittest_ldapsource.py	Thu Apr 10 10:59:08 2014 +0200
@@ -241,7 +241,7 @@
         self.assertMetadata(e)
         self.assertEqual(e.firstname, None)
         self.assertEqual(e.surname, None)
-        self.assertIn('users' in [g.name for g, e.in_group])
+        self.assertIn('users', set(g.name for g in e.in_group))
         self.assertEqual(e.owned_by[0].login, 'syt')
         self.assertEqual(e.created_by, ())
         addresses = [pe.address for pe in e.use_email]