diff --git a/lib/OpenLayers/Layer/HTTPRequest.js b/lib/OpenLayers/Layer/HTTPRequest.js
index 0ae44bcbc1..0e1b3afb8b 100644
--- a/lib/OpenLayers/Layer/HTTPRequest.js
+++ b/lib/OpenLayers/Layer/HTTPRequest.js
@@ -143,7 +143,7 @@ OpenLayers.Layer.HTTPRequest = OpenLayers.Class(OpenLayers.Layer, {
      */
     redraw: function(force) { 
         if (force) {
-            this.mergeNewParams({"_olSalt": Math.random()});
+            return this.mergeNewParams({"_olSalt": Math.random()});
         } else {
             return OpenLayers.Layer.prototype.redraw.call(this);
         }