diff --git a/phpBB/download/file.php b/phpBB/download/file.php
index 97f4ff3c8a..1f2cee4d95 100644
--- a/phpBB/download/file.php
+++ b/phpBB/download/file.php
@@ -48,6 +48,7 @@ if (isset($_GET['avatar']))
 	require($phpbb_root_path . 'includes/cache.' . $phpEx);
 	require($phpbb_root_path . 'includes/db/' . $dbms . '.' . $phpEx);
 	require($phpbb_root_path . 'includes/constants.' . $phpEx);
+	require($phpbb_root_path . 'includes/functions.' . $phpEx);
 
 	$db = new $sql_db();
 	$cache = new cache();