diff --git a/html/index.html b/html/index.html
index 45492f1722cdd31b37c88d73f2ba90bd6142a11a..c7b5bcd84d72d75d58b61d19c8b64f4c79a4b2d3 100644
--- a/html/index.html
+++ b/html/index.html
@@ -63,7 +63,7 @@
 <dd>Installing a server that will generate and store alignments</dd>
 <dt><a href="tutorial/">Tutorial</a></dt>
 <dd>Walk through the Alignment API features</dd>
-<dt><a href="http://gforge.inria.fr/docman/view.php/117/251/align.pdf">Documentation</a></dt>
+<dt><a href="http://gforge.inria.fr/docman/index.php?group_id=117&amp;selected_doc_group_id=1812">Documentation</a></dt>
 <dd>Supposed to be a reference manual, but not fully complete.</dd>
 </dl>
 </p>