diff --git a/admin/include/functions.php b/admin/include/functions.php
index 6d1e3437e..0a310415b 100644
--- a/admin/include/functions.php
+++ b/admin/include/functions.php
@@ -2374,7 +2374,7 @@ function cat_admin_access($category_id)
 
   // $filter['visible_categories'] and $filter['visible_images']
   // are not used because it's not necessary (filter <> restriction)
-  if (in_array($category_id, explode(',', $user['forbidden_categories'])))
+  if (in_array($category_id, @explode(',', $user['forbidden_categories'])))
   {
     return false;
   }