diff --git a/graphene_django/tests/test_types.py b/graphene_django/tests/test_types.py
index 34828db..b30c679 100644
--- a/graphene_django/tests/test_types.py
+++ b/graphene_django/tests/test_types.py
@@ -30,7 +30,7 @@ class ArticleConnection(Connection):
 
     test = String()
 
-    def resolve_test():
+    def resolve_test(self):
         return "test"
 
     class Meta: