diff --git a/tests/test_model_serializer.py b/tests/test_model_serializer.py
index e5e0fa6f9..906510f73 100644
--- a/tests/test_model_serializer.py
+++ b/tests/test_model_serializer.py
@@ -216,7 +216,7 @@ class TestRegularFieldMappings(TestCase):
                 "(u'red', u'Red'), (u'blue', u'Blue'), (u'green', u'Green')"
             ).replace(
                 "{'max_value': 'Ensure this value is less than or equal to %(limit_value)s.', 'min_value': 'Ensure this value is greater than or equal to %(limit_value)s.'}",
-                {'max_value': u'Ensure this value is less than or equal to %(limit_value)s.', 'min_value': u'Ensure this value is greater than or equal to %(limit_value)s.'}
+                "{'max_value': u'Ensure this value is less than or equal to %(limit_value)s.', 'min_value': u'Ensure this value is greater than or equal to %(limit_value)s.'}"
             )
         self.assertEqual(unicode_repr(TestSerializer()), expected)