diff --git a/lib/OpenLayers/Tile/Image/IFrame.js b/lib/OpenLayers/Tile/Image/IFrame.js
index 8a0c9e5b68..46f934500d 100644
--- a/lib/OpenLayers/Tile/Image/IFrame.js
+++ b/lib/OpenLayers/Tile/Image/IFrame.js
@@ -222,7 +222,6 @@ OpenLayers.Tile.Image.IFrame = OpenLayers.Class(OpenLayers.Tile.Image, {
         // creation of the form element
         var form = document.createElement('form');
         form.method = 'POST';
-        // call getFullRequestString in a scope without params
         var cacheId = this.layer.params["_OLSALT"];
         cacheId = (cacheId ? cacheId + "_" : "") + this.bounds.toBBOX();
         form.action = OpenLayers.Util.urlAppend(this.layer.url, cacheId);