diff --git a/phpBB/includes/functions.php b/phpBB/includes/functions.php
index c937b8f562..a6c03098c2 100644
--- a/phpBB/includes/functions.php
+++ b/phpBB/includes/functions.php
@@ -2645,7 +2645,7 @@ function generate_board_url($without_script_path = false)
 */
 function redirect($url, $return = false, $disable_cd_check = false)
 {
-	global $db, $cache, $config, $user, $phpbb_root_path, $phpbb_filesystem;
+	global $db, $cache, $config, $user, $phpbb_root_path, $phpbb_filesystem, $phpbb_path_helper;
 
 	$failover_flag = false;