diff --git a/conntrackt/tests/test_models.py b/conntrackt/tests/test_models.py
--- a/conntrackt/tests/test_models.py
+++ b/conntrackt/tests/test_models.py
@@ -127,7 +127,7 @@ class EntityTest(TestCase):
         new_project = Project.objects.get(pk=2)
 
         entity.project = new_project
-        self.assertRaisesRegexp(ValidationError, "The entity cannot be moved to different project as long as it has valid communications with entities in current project." ,entity.clean)
+        self.assertRaisesRegexp(ValidationError, "The entity cannot be moved to different project as long as it has valid communications with entities in current project.", entity.clean)
 
 
 class InterfaceTest(TestCase):