diff --git a/docs/tutorial-plain.rst b/docs/tutorial-plain.rst
index d5045aa..4ffd5b3 100644
--- a/docs/tutorial-plain.rst
+++ b/docs/tutorial-plain.rst
@@ -157,10 +157,10 @@ Create ``cookbook/ingredients/schema.py`` and type the following:
         all_categories = graphene.List(CategoryType)
         all_ingredients = graphene.List(IngredientType)
 
-        def resolve_all_categories(self, info, **kwargs):
+        def resolve_all_categories(self, info, *args, **kwargs):
             return Category.objects.all()
 
-        def resolve_all_ingredients(self, info, **kwargs):
+        def resolve_all_ingredients(self, info, *args, **kwargs):
             # We can easily optimize query count in the resolve method
             return Ingredient.objects.select_related('category').all()