diff --git a/lib/OpenLayers/Tile/UTFGrid.js b/lib/OpenLayers/Tile/UTFGrid.js
index 1dc66454d0..35151dba10 100644
--- a/lib/OpenLayers/Tile/UTFGrid.js
+++ b/lib/OpenLayers/Tile/UTFGrid.js
@@ -95,6 +95,8 @@ OpenLayers.Tile.UTFGrid = OpenLayers.Class(OpenLayers.Tile, {
                 var ols = new OpenLayers.Protocol.Script({
                     url: this.url, 
                     callback: function(response) {
+                        this.isLoading = false;
+                        this.events.triggerEvent("loadend");
                         this.json = response.data;
                     },
                     scope: this
@@ -104,7 +106,13 @@ OpenLayers.Tile.UTFGrid = OpenLayers.Class(OpenLayers.Tile, {
                 // Use standard XHR
                 OpenLayers.Request.GET({
                     url: this.url,
-                    callback: this.parseData,
+                    callback: function(response) {
+                        this.isLoading = false;
+                        this.events.triggerEvent("loadend");
+                        if (response.status === 200) {
+                            this.parseData(response);
+                        }
+                    },
                     scope: this
                 });
             }
@@ -122,12 +130,10 @@ OpenLayers.Tile.UTFGrid = OpenLayers.Class(OpenLayers.Tile, {
      * {Object} parsed javascript data
      */
     parseData: function(req) {
-        if (req.status == 200) {
-            if (!this.format) {
-                this.format = new OpenLayers.Format.JSON();
-            }
-            this.json = this.format.read(req.responseText);
-        } 
+        if (!this.format) {
+            this.format = new OpenLayers.Format.JSON();
+        }
+        this.json = this.format.read(req.responseText);
     },
     
     /**