diff --git a/phpBB/includes/functions_acp.php b/phpBB/includes/functions_acp.php
index 774fca7d12..b9210114ef 100644
--- a/phpBB/includes/functions_acp.php
+++ b/phpBB/includes/functions_acp.php
@@ -68,6 +68,7 @@ function adm_page_header($page_title)
 		'_SID'					=> $_SID,
 		'SESSION_ID'			=> $user->session_id,
 		'ROOT_PATH'				=> $phpbb_root_path,
+		'ADMIN_ROOT_PATH'		=> $phpbb_admin_path,
 
 		'U_LOGOUT'				=> append_sid("{$phpbb_root_path}ucp.$phpEx", 'mode=logout'),
 		'U_ADM_LOGOUT'			=> append_sid("{$phpbb_admin_path}index.$phpEx", 'action=admlogout'),