diff --git a/core/_install.php b/core/_install.php
index a49b8fad..36dc7373 100644
--- a/core/_install.php
+++ b/core/_install.php
@@ -60,6 +60,7 @@ define("DATABASE_TIMEOUT", 10000);
 <?php }
 
 // Pull in necessary files
+require_once "vendor/autoload.php";
 require_once "core/exceptions.php";
 require_once "core/cacheengine.php";
 require_once "core/dbengine.php";