diff --git a/ui/ui.progressbar.js b/ui/ui.progressbar.js
index 2b292f058d..e72b31e5de 100644
--- a/ui/ui.progressbar.js
+++ b/ui/ui.progressbar.js
@@ -106,7 +106,8 @@ $.extend($.ui.progressbar, {
 	version: "@VERSION",
 	defaults: {
 		value: 0
-	}
+	},
+	getter: "value"
 });
 
 })(jQuery);