diff --git a/actionpack/lib/action_controller/metal/helpers.rb b/actionpack/lib/action_controller/metal/helpers.rb
index 243fd40a7e3176aa3554749151b7f40f77827f1f..b53ae7f29f4757ec4e7ab0b43affb11ad46dc100 100644
--- a/actionpack/lib/action_controller/metal/helpers.rb
+++ b/actionpack/lib/action_controller/metal/helpers.rb
@@ -5,7 +5,7 @@ module ActionController
   #
   # In addition to using the standard template helpers provided, creating custom helpers to
   # extract complicated logic or reusable functionality is strongly encouraged. By default, each controller
-  # will include all helpers.
+  # will include all helpers. These helpers are only accessible on the controller through <tt>.helpers</tt>
   #
   # In previous versions of \Rails the controller will include a helper whose
   # name matches that of the controller, e.g., <tt>MyController</tt> will automatically