diff --git a/util/maintenance.php b/util/maintenance.php
index 5d0c62196c..614344ab93 100644
--- a/util/maintenance.php
+++ b/util/maintenance.php
@@ -21,7 +21,7 @@ if ($argc > 1) {
 	$maint_mode = intval($argv[1]);
 }
 
-//Config::set('system', 'maintenance', $maint_mode);
+Config::set('system', 'maintenance', $maint_mode);
 
 if ($maint_mode AND ($argc > 2)) {
 	$reason_arr = $argv;