diff --git a/gnuviechadmin/osusers/tests/test_models.py b/gnuviechadmin/osusers/tests/test_models.py
index bb8d5c9..27c3f74 100644
--- a/gnuviechadmin/osusers/tests/test_models.py
+++ b/gnuviechadmin/osusers/tests/test_models.py
@@ -153,7 +153,10 @@ class AdditionalGroupTest(TestCaseWithCeleryTasks):
     def test_save_again(self):
         group2 = Group.objects.create(groupname='test2', gid=1001)
         TaskResult.objects.all().delete()
-        group2.save()
+        addgroup = AdditionalGroup(user=self.user, group=group2)
+        addgroup.save()
+        TaskResult.objects.all().delete()
+        addgroup.save()
         taskres = TaskResult.objects.all()
         self.assertEqual(len(taskres), 0)
 
@@ -187,6 +190,19 @@ class GroupTest(TestCaseWithCeleryTasks):
     def test_save(self):
         group = Group(gid=10000, groupname='test')
         self.assertIs(group.save(), group)
+        taskres = TaskResult.objects.all()
+        self.assertTrue(len(taskres), 1)
+        creators = [r.creator for r in taskres]
+        for tcount, tcreator in [
+                (1, 'handle_group_created')]:
+            self.assertEqual(creators.count(tcreator), tcount)
+
+    def test_save_again(self):
+        group = Group.objects.create(gid=10000, groupname='test')
+        taskres = TaskResult.objects.all().delete()
+        group.save()
+        taskres = TaskResult.objects.all()
+        self.assertEqual(len(taskres), 0)
 
     def test_delete(self):
         group = Group.objects.create(gid=10000, groupname='test')