diff --git a/lib/OpenLayers/Icon.js b/lib/OpenLayers/Icon.js
index 708eb8623f..3d8fb50335 100644
--- a/lib/OpenLayers/Icon.js
+++ b/lib/OpenLayers/Icon.js
@@ -114,7 +114,8 @@ OpenLayers.Icon = OpenLayers.Class({
      * Method: setSize
      * 
      * Parameters:
-     * size - {<OpenLayers.Size>} 
+     * size - {<OpenLayers.Size>|Object} An OpenLayers.Size or
+     * an object with a 'w' and 'h' properties.
      */
     setSize: function(size) {
         if (size != null) {