diff --git a/assets/js/um-conditional.js b/assets/js/um-conditional.js
index 87e3400b..01619273 100644
--- a/assets/js/um-conditional.js
+++ b/assets/js/um-conditional.js
@@ -468,7 +468,7 @@ jQuery(document).ready( function (){
      * @param  object $dom
      */
     function _hide_in_ie( $dom ){
-        if( jQuery.browser.msie ){
+        if ( typeof( jQuery.browser ) != 'undefined' && jQuery.browser.msie ) {
            $dom.css({"visibility":"hidden"});
         }
     }
@@ -478,7 +478,7 @@ jQuery(document).ready( function (){
      * @param  object $dom
      */
     function _show_in_ie( $dom ){
-        if( jQuery.browser.msie ){
+        if ( typeof( jQuery.browser ) != 'undefined' && jQuery.browser.msie ) {
            $dom.css({"visibility":"visible"});
         }
     }