diff --git a/kallithea/templates/base/default_perms_box.html b/kallithea/templates/base/default_perms_box.html
--- a/kallithea/templates/base/default_perms_box.html
+++ b/kallithea/templates/base/default_perms_box.html
@@ -73,10 +73,9 @@ ${h.end_form()}
 $(document).ready(function(e){
     var show_custom_perms = function(inherit_default){
         if(inherit_default){
-            YUD.setStyle('inherit_overlay', 'display', 'none');
-        }
-        else{
-            YUD.setStyle('inherit_overlay', 'display', '');
+            $('#inherit_overlay').hide();
+        }else{
+            $('#inherit_overlay').show();
         }
     }