diff --git a/source/Ox/js/DOM.js b/source/Ox/js/DOM.js
index 9470321c..38a2931c 100644
--- a/source/Ox/js/DOM.js
+++ b/source/Ox/js/DOM.js
@@ -84,9 +84,16 @@ Ox.element = function(str) {
             className <s> Class name
         @*/
         addClass: function(str) {
-            this[0].className = this[0].className ? Ox.unique(
-                (this[0].className + ' ' + str).split(' ')
-            ).join(' ') : str;
+            /* fixme:
+            this[0].className = Ox.unique(
+                this[0].className.split(' ').push(className)
+            ).join(' ');
+            */
+            this[0].className = this[0].className
+                ? Ox.unique(
+                    (this[0].className + ' ' + str).split(' ')
+                ).join(' ')
+                : str;
             return this;
         },
         /*@