diff --git a/docs/core/index.rst b/docs/core/index.rst
index df3cc75391c..cec06107c69 100644
--- a/docs/core/index.rst
+++ b/docs/core/index.rst
@@ -14,11 +14,9 @@ Twisted Core
     specifications/index
     development/index
 
-
 - :doc:`Developer guides <howto/index>`: documentation on using Twisted Core to develop your own applications
 - :doc:`Examples <examples/index>`: short code examples using Twisted Core
 - :doc:`Specifications <specifications/index>`: specification documents for elements of Twisted Core
 - :doc:`Development of Twisted <development/index>`: for people who want to work on Twisted itself
 
-
-An `API reference <//twistedmatrix.com/documents/current/api/>`_ is available on the twistedmatrix web site.
+An :py:mod:`API reference <twisted>` is available.