diff --git a/graphene_django/rest_framework/tests/test_mutation.py b/graphene_django/rest_framework/tests/test_mutation.py
index a594fc2..32f1e28 100644
--- a/graphene_django/rest_framework/tests/test_mutation.py
+++ b/graphene_django/rest_framework/tests/test_mutation.py
@@ -229,7 +229,7 @@ def test_perform_mutate_success():
     result = MyMethodMutation.mutate_and_get_payload(
         None,
         mock_info(),
-        **{"cool_name": "Narf", "last_edited": datetime.date(2020, 1, 4),}
+        **{"cool_name": "Narf", "last_edited": datetime.date(2020, 1, 4)}
     )
 
     assert result.errors is None