diff --git a/graphene/types/schema.py b/graphene/types/schema.py
index 63211dc6..97462235 100644
--- a/graphene/types/schema.py
+++ b/graphene/types/schema.py
@@ -104,4 +104,10 @@ class Schema(GraphQLSchema):
         ]
         if self.types:
             initial_types += self.types
-        self._type_map = TypeMap(initial_types, auto_camelcase=self.auto_camelcase, schema=self, resolvers=self._resolvers)
+
+        self._type_map = TypeMap(
+            initial_types,
+            auto_camelcase=self.auto_camelcase,
+            schema=self,
+            resolvers=self._resolvers
+        )