diff --git a/flask.py b/flask.py
index dcf26b32..6f8a21fc 100644
--- a/flask.py
+++ b/flask.py
@@ -85,7 +85,7 @@ class Response(ResponseBase):
     :meth:`~flask.Flask.make_response` will take care of that for you.
 
     If you want to replace the response object used you can subclass this and
-    set :attr:`~flask.Flask.request_class` to your subclass.
+    set :attr:`~flask.Flask.response_class` to your subclass.
     """
     default_mimetype = 'text/html'