diff --git a/lib/OpenLayers/Ajax.js b/lib/OpenLayers/Ajax.js
index 8c044a302b..08e5b29c82 100644
--- a/lib/OpenLayers/Ajax.js
+++ b/lib/OpenLayers/Ajax.js
@@ -43,7 +43,9 @@ OpenLayers.nullHandler = function(request) {
  *
  * Parameters:
  * uri - {String} URI of source doc
- * params - {String} Params on get (doesnt seem to work)
+ * params - {String} or {Object} GET params. Either a string in the form
+ *     "?hello=world&foo=bar" (do not forget the leading question mark)
+ *     or an object in the form {'hello': 'world', 'foo': 'bar}
  * caller - {Object} object which gets callbacks
  * onComplete - {Function} Optional callback for success.  The callback
  *     will be called with this set to caller and will receive the request