diff --git a/admin/category.php b/admin/category.php
index c06426e8023..39b74abea80 100644
--- a/admin/category.php
+++ b/admin/category.php
@@ -31,6 +31,7 @@ $return = optional_param('return','', PARAM_ALPHA);
 $adminediting = optional_param('adminedit', -1, PARAM_BOOL);
 
 require_admin();
+$PAGE->set_context(context_system::instance());
 $PAGE->set_url('/admin/category.php', array('category' => $category));
 $PAGE->set_pagetype('admin-setting-' . $category);
 $PAGE->set_pagelayout('admin');