diff --git a/external/header.php b/external/header.php
index 52b4e76a..c26ee4f2 100644
--- a/external/header.php
+++ b/external/header.php
@@ -1,6 +1,7 @@
 <?php
 if (PHP_SAPI == 'cli') {
   $_SERVER['REMOTE_ADDR'] = null;
+  $_SERVER['HTTP_HOST'] = null;
   $_SERVER['REQUEST_URI'] = $_SERVER['SCRIPT_NAME'];
 }