diff --git a/lib/OpenLayers/Layer/Boxes.js b/lib/OpenLayers/Layer/Boxes.js
index a3e2f99c73..91c3d49cad 100644
--- a/lib/OpenLayers/Layer/Boxes.js
+++ b/lib/OpenLayers/Layer/Boxes.js
@@ -49,10 +49,10 @@ OpenLayers.Layer.Boxes = OpenLayers.Class(OpenLayers.Layer.Markers, {
         if (botright == null || topleft == null) {
             marker.display(false);
         } else {
-            var sz = new OpenLayers.Size(
-                Math.max(1, botright.x - topleft.x),
-                Math.max(1, botright.y - topleft.y));
-            var markerDiv = marker.draw(topleft, sz);
+            var markerDiv = marker.draw(topleft, {
+                w: Math.max(1, botright.x - topleft.x),
+                h: Math.max(1, botright.y - topleft.y)
+            });
             if (!marker.drawn) {
                 this.div.appendChild(markerDiv);
                 marker.drawn = true;