diff --git a/lib/OpenLayers/Ajax.js b/lib/OpenLayers/Ajax.js
index f61c3af291..c19a928bd6 100644
--- a/lib/OpenLayers/Ajax.js
+++ b/lib/OpenLayers/Ajax.js
@@ -2,6 +2,9 @@
  * license.  See http://svn.openlayers.org/trunk/openlayers/license.txt for the
  * full text of the license. */
 
+/**
+ * @requires OpenLayers/Request/XMLHttpRequest.js
+ */
 
 OpenLayers.ProxyHost = "";
 //OpenLayers.ProxyHost = "examples/proxy.cgi?url=";