diff --git a/pronamic-pay-adyen.php b/pronamic-pay-adyen.php
index 90278c8..cb084bc 100644
--- a/pronamic-pay-adyen.php
+++ b/pronamic-pay-adyen.php
@@ -30,7 +30,7 @@
 /**
  * Autoload.
  */
-require_once __DIR__ . '/vendor/autoload.php';
+require_once __DIR__ . '/vendor/autoload_packages.php';
 
 /**
  * Gateway.