diff --git a/lib/OpenLayers/Format/Filter/v1.js b/lib/OpenLayers/Format/Filter/v1.js
index c6750e1537..7fd9830451 100644
--- a/lib/OpenLayers/Format/Filter/v1.js
+++ b/lib/OpenLayers/Format/Filter/v1.js
@@ -5,6 +5,7 @@
 /**
  * @requires OpenLayers/Format/Filter.js
  * @requires OpenLayers/Format/XML.js
+ * @requires OpenLayers/Filter/Function.js
  */
 
 /**