diff --git a/tests/test_fields.py b/tests/test_fields.py
index 47dd274e8..38dc5f7a7 100644
--- a/tests/test_fields.py
+++ b/tests/test_fields.py
@@ -1144,7 +1144,7 @@ class TestDateTimeField(FieldValues):
     valid_inputs = {
         '2001-01-01 13:00': datetime.datetime(2001, 1, 1, 13, 00, tzinfo=utc),
         '2001-01-01T13:00': datetime.datetime(2001, 1, 1, 13, 00, tzinfo=utc),
-        '2001-01-01T13:00Z': datetime.datetime(2001, 1, 1, 13, 00, tzinfo=utc)
+        '2001-01-01T13:00Z': datetime.datetime(2001, 1, 1, 13, 00, tzinfo=utc),
         datetime.datetime(2001, 1, 1, 13, 00): datetime.datetime(2001, 1, 1, 13, 00, tzinfo=utc),
         datetime.datetime(2001, 1, 1, 13, 00, tzinfo=utc): datetime.datetime(2001, 1, 1, 13, 00, tzinfo=utc),
     }