diff --git a/classmap.php b/classmap.php
index 2d8a52b..749e01b 100644
--- a/classmap.php
+++ b/classmap.php
@@ -11,6 +11,8 @@
  * @link http://leafo.github.io/scssphp
  */
 
+require_once dirname(__DIR__) . '/Leafo/ScssPhp/autoload.php';
+
 // @codingStandardsIgnoreStart
 /**
  * @deprecated since 0.1.0