--- a/server/python/django2/renkanmanager/tests/v1_0/tests_revision.py	Tue Mar 01 17:39:39 2016 +0100
+++ b/server/python/django2/renkanmanager/tests/v1_0/tests_revision.py	Thu Mar 03 17:09:27 2016 +0100
@@ -13,10 +13,10 @@
     
     def setUp(self):
         User.objects.create_superuser("blop", "blop@blop.com", "blop")
-        self.user = User.objects.get(username="blop")
+        self.user = User.objects.get_by_natural_key(username="blop")
         _ = self.client.login(username="blop", password="blop")
         User.objects.create_user("blip", "blip@blip.com", "blip")
-        self.unauthorized_user = User.objects.get(username="blip")
+        self.unauthorized_user = User.objects.get_by_natural_key(username="blip")
         
         ###################################################
         # POSTing new Renkan
@@ -56,8 +56,8 @@
         get_response_dict = json.loads(get_response.content.decode()) 
         self.assertEqual(get_response_dict.get("id", ""), self.test_initial_revision_guid)
         self.assertEqual(get_response_dict.get("parent_renkan_id", ""), self.test_renkan_guid)
-        self.assertEqual(get_response_dict.get("revision_created_by", ""), self.user.username)
-        self.assertEqual(get_response_dict.get("revision_last_updated_by", ""), self.user.username)
+        self.assertEqual(get_response_dict.get("revision_created_by", ""), getattr(self.user, User.USERNAME_FIELD))
+        self.assertEqual(get_response_dict.get("revision_last_updated_by", ""), getattr(self.user, User.USERNAME_FIELD))
         self.assertEqual(get_response_dict.get("title", ""), self.test_data.get("title", ""))
         self.assertEqual(get_response_dict.get("content", ""), self.test_data.get("content", ""))