diff --git a/lib/OpenLayers/Layer/Grid.js b/lib/OpenLayers/Layer/Grid.js
index 587f0a3034..9138f204a3 100644
--- a/lib/OpenLayers/Layer/Grid.js
+++ b/lib/OpenLayers/Layer/Grid.js
@@ -667,10 +667,10 @@ OpenLayers.Layer.Grid = OpenLayers.Class(OpenLayers.Layer.HTTPRequest, {
      * a new one with updated tileSize and extent.
      */
     onMapResize: function() {
-      if (this.singleTile) {
-        this.clearGrid();
-        this.setTileSize();
-      }
+        if (this.singleTile) {
+            this.clearGrid();
+            this.setTileSize();
+        }
     },
     
     /**