diff --git a/source/js/Ox.UI/Ox.UI.js b/source/js/Ox.UI/Ox.UI.js
index 823adbb1..f2bca1f4 100644
--- a/source/js/Ox.UI/Ox.UI.js
+++ b/source/js/Ox.UI/Ox.UI.js
@@ -26,10 +26,13 @@ Ox.load.UI = function(options, callback) {
                 version: 5
             }
         ],
-        browserSupported = false;
+        browserSupported = false,
+        loadingInterval;
 
     browsers.forEach(function(browser) {
-        var match = browser.regexp(navigator.userAgent);
+        // fixme: check if this remains broken in wekbit nightlies
+        // var match = browser.regexp(navigator.userAgent);
+        var match = browser.regexp.exec(navigator.userAgent);
         if (match && match[1] >= browser.version) {
             browserSupported = true;
         }
@@ -92,7 +95,8 @@ Ox.load.UI = function(options, callback) {
                     .appendTo(div);
             });
             */
-            var deg = 0, element, interval,
+            var deg = 0,
+                element,
                 src = Ox.PATH + 'svg/Ox.UI.' + options.theme + '/symbolLoading.svg'
             Ox.loadFile(src, function() {
                 element = Ox.element('<img>')
@@ -107,13 +111,12 @@ Ox.load.UI = function(options, callback) {
                         e.preventDefault()
                     })
                     .appendTo(div);
-                setTimeout(function rotate() {
+                loadingInterval = setInterval(function() {
                     deg = (deg + 30) % 360;
                     element.css({
                         MozTransform: 'rotate(' + deg + 'deg)',
                         WebkitTransform: 'rotate(' + deg + 'deg)'
                     });
-                    Ox.element('OxLoadingScreen')[0] && setTimeout(rotate, 83);
                 }, 83);
             });
         }
@@ -267,6 +270,7 @@ Ox.load.UI = function(options, callback) {
                             $div.remove();
                         });
                 } else {
+                    clearInterval(loadingInterval);
                     $div.remove();
                 }
             });