diff --git a/source/Ox.UI/Ox.UI.js b/source/Ox.UI/Ox.UI.js
index 1a0ff6da..c2a9d02a 100644
--- a/source/Ox.UI/Ox.UI.js
+++ b/source/Ox.UI/Ox.UI.js
@@ -408,7 +408,7 @@ Ox.load.UI = function(options, callback) {
         //@ Ox.UI.PATH <str> Path of Ox.UI
         Ox.UI.PATH = Ox.PATH + 'Ox.UI/';
         //@ Ox.UI.SCOLLBAR_SIZE <str> size of scrollbar
-        Ox.UI.SCROLLBAR_SIZE = $.browser.webkit ? 12 : (function() {
+        Ox.UI.SCROLLBAR_SIZE = $.browser.webkit ? 8 : (function() {
             var inner = $('<p>').css({
                     height: '200px',
                     width: '100%'