diff --git a/lib/OpenLayers/Layer/Vector.js b/lib/OpenLayers/Layer/Vector.js
index dc3b440187..a584e7079e 100644
--- a/lib/OpenLayers/Layer/Vector.js
+++ b/lib/OpenLayers/Layer/Vector.js
@@ -295,7 +295,7 @@ OpenLayers.Layer.Vector = OpenLayers.Class(OpenLayers.Layer, {
      * and assigns the first one whose "supported()" function returns true.
      */    
     assignRenderer: function()  {
-        for (var i=0, len=this.renderers.length; i<this.renderers.length; i++) {
+        for (var i=0, len=this.renderers.length; i<len; i++) {
             var rendererClass = OpenLayers.Renderer[this.renderers[i]];
             if (rendererClass && rendererClass.prototype.supported()) {
                 this.renderer = new rendererClass(this.div,