diff --git a/graphene_django/rest_framework/mutation.py b/graphene_django/rest_framework/mutation.py
index 7d74717..e5b3be0 100644
--- a/graphene_django/rest_framework/mutation.py
+++ b/graphene_django/rest_framework/mutation.py
@@ -126,4 +126,4 @@ class SerializerMutation(six.with_metaclass(SerializerMutationMeta, Mutation)):
     def perform_mutate(cls, serializer, info):
         obj = serializer.save()
 
-        return cls(errors=[], **obj)
\ No newline at end of file
+        return cls(errors=[], **obj)