diff --git a/tests/bootstrap.php b/tests/bootstrap.php
index 6a4f778024..6c04450b6a 100644
--- a/tests/bootstrap.php
+++ b/tests/bootstrap.php
@@ -13,6 +13,7 @@ require_once __DIR__.'/../include/api.php';
 
 new App(dirname(__DIR__));
 
+\Friendica\Core\Config::set('system', 'url', 'http://localhost');
 \Friendica\Core\Config::set('system', 'worker_dont_fork', true);
 
 // Backward compatibility