diff --git a/infodx.htm b/infodx.htm
index 5042833d0..9cc3345a1 100644
--- a/infodx.htm
+++ b/infodx.htm
@@ -105,7 +105,7 @@
 <li><a href="expofiles/surveys">Full-size surveys</a></li>
 <li><a href="expofiles/rigging_topos">Rigging topos</a></li>
 <li><a href="expofiles/terrain">Terrain models</a></li>
-<li><a href="expofiles/tunnelwiki/www.freesteel.co.uk/wiki/index.php/Tunnel.html">Tunnel Wiki (documentation)</a></li>
+<li><a href="expofiles/tunnelwiki/wiki/index.php/Tunnel.html">Tunnel Wiki (documentation)</a></li>
 
 </ul>