diff --git a/lib/OpenLayers/BaseTypes/Bounds.js b/lib/OpenLayers/BaseTypes/Bounds.js
index 5a527ca02a..5dd6d2c906 100644
--- a/lib/OpenLayers/BaseTypes/Bounds.js
+++ b/lib/OpenLayers/BaseTypes/Bounds.js
@@ -716,7 +716,8 @@ OpenLayers.Bounds.fromArray = function(bbox, reverseAxisOrder) {
  *     from a size
  * 
  * Parameters:
- * size - {<OpenLayers.Size>} 
+ * size - {<OpenLayers.Size>|Object} OpenLayers.Size or an object with
+ *     a 'w' and 'h' properties.
  *
  * Returns:
  * {<OpenLayers.Bounds>} New bounds object built from the passed-in size.