diff --git a/docs/add_ons.txt b/docs/add_ons.txt
index 90c98b7176..6507f3b139 100644
--- a/docs/add_ons.txt
+++ b/docs/add_ons.txt
@@ -2,12 +2,15 @@
 The "contrib" add-ons
 =====================
 
-Django aims to follow Python's "batteries included" philosophy. It ships with a
-variety of extra, optional tools that solve common Web-development problems.
+Django aims to follow Python's `"batteries included" philosophy`_. It ships
+with a variety of extra, optional tools that solve common Web-development
+problems.
 
 This code lives in ``django/contrib`` in the Django distribution. Here's a
 rundown of the packages in ``contrib``:
 
+.. _"batteries included" philosophy: http://docs.python.org/tut/node12.html#batteries-included
+
 admin
 =====