diff --git a/tests/fields/fields.py b/tests/fields/fields.py
index 830c9882..3b860cc7 100644
--- a/tests/fields/fields.py
+++ b/tests/fields/fields.py
@@ -2491,7 +2491,7 @@ class FieldTest(unittest.TestCase):
         binary_id = uuid.uuid4().bytes
         att = Attachment(id=binary_id).save()
         self.assertEqual(1, Attachment.objects.count())
-        self.assertIsNotNone(Attachment.objects.filter(id=binary_id).first())
+        self.assertNotEqual(None, Attachment.objects.filter(id=binary_id).first())
         att.delete()
         self.assertEqual(0, Attachment.objects.count())