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
@@ -97,7 +97,6 @@ class EntityTest(TestCase):
 
         self.assertEqual(str(ent), representation)
 
-
     def test_unique_name(self):
         """
         Test if unique entity name is enforced across same project.
@@ -131,11 +130,10 @@ class InterfaceTest(TestCase):
 
         interface = entity.interface_set.get(pk=1)
 
-        duplicate = Interface(name=interface.name, description = "Duplicate interface.", entity=entity, address="10.10.10.10", netmask="255.255.255.255")
+        duplicate = Interface(name=interface.name, description="Duplicate interface.", entity=entity, address="10.10.10.10", netmask="255.255.255.255")
 
         self.assertRaises(IntegrityError, duplicate.save)
 
-
     def test_representation_single(self):
         """
         Test representation of single IP address.