diff --git a/phpBB/adm/swatch.php b/phpBB/adm/swatch.php
index 5e8984db70..86498a255f 100644
--- a/phpBB/adm/swatch.php
+++ b/phpBB/adm/swatch.php
@@ -21,6 +21,8 @@ $user->session_begin(false);
 $auth->acl($user->data);
 $user->setup();
 
+$phpbb_admin_path = (defined('PHPBB_ADMIN_PATH')) ? PHPBB_ADMIN_PATH : './';
+
 // Set custom template for admin area
 $phpbb_style->set_custom_style('admin', $phpbb_admin_path . 'style', '');