diff --git a/actionpack/lib/action_controller/metal/mime_responds.rb b/actionpack/lib/action_controller/metal/mime_responds.rb
index 796582b6c3..fbb5d01e86 100644
--- a/actionpack/lib/action_controller/metal/mime_responds.rb
+++ b/actionpack/lib/action_controller/metal/mime_responds.rb
@@ -215,7 +215,7 @@ module ActionController #:nodoc:
     # the mime-type can be selected by explicitly setting <tt>request.format</tt> in
     # the controller.
     #
-    # If an acceptable response is not found, the application returns a
+    # If an acceptable format is not identified, the application returns a
     # '406 - not acceptable' status. Otherwise, the default response is to render
     # a template named after the current action and the selected format,
     # e.g. <tt>index.html.erb</tt>. If no template is available, the behavior