diff --git a/docs/installation.txt b/docs/installation.txt
index c2f9c72..ca6f162 100644
--- a/docs/installation.txt
+++ b/docs/installation.txt
@@ -62,7 +62,7 @@ for the optional :ref:`parser <compress_parser>`
 .. _BeautifulSoup: http://www.crummy.com/software/BeautifulSoup/
 .. _lxml: http://codespeak.net/lxml/
 .. _libxml2: http://xmlsoft.org/
-.. _html5lib: html5lib_ (optional)
+.. _html5lib: http://code.google.com/p/html5lib/
 
 Deprecation
 -----------