diff --git a/guides/source/action_controller_overview.md b/guides/source/action_controller_overview.md
index 9ab2841619..7e43ba375a 100644
--- a/guides/source/action_controller_overview.md
+++ b/guides/source/action_controller_overview.md
@@ -810,7 +810,7 @@ The [Security Guide](security.html) has more about this and a lot of other secur
 The Request and Response Objects
 --------------------------------
 
-In every controller there are two accessor methods pointing to the request and the response objects associated with the request cycle that is currently in execution. The `request` method contains an instance of `AbstractRequest` and the `response` method returns a response object representing what is going to be sent back to the client.
+In every controller there are two accessor methods pointing to the request and the response objects associated with the request cycle that is currently in execution. The `request` method contains an instance of `ActionDispatch::Request` and the `response` method returns a response object representing what is going to be sent back to the client.
 
 ### The `request` Object