diff --git a/test/bootstrap/functional.php b/test/bootstrap/functional.php
index e7fab1c93..f7fef9a12 100644
--- a/test/bootstrap/functional.php
+++ b/test/bootstrap/functional.php
@@ -8,6 +8,8 @@
  * file that was distributed with this source code.
  */
 
+require_once __DIR__.'/../../vendor/autoload.php';
+
 // setup expected test environment (per check_configuration.php)
 ini_set('magic_quotes_runtime', 'off');
 ini_set('session.auto_start', 'off');