diff --git a/lib/init.php b/lib/init.php
index 2e57aa1c..7d474ad4 100644
--- a/lib/init.php
+++ b/lib/init.php
@@ -16,6 +16,10 @@
  * @package    System
  *
  */
+if(!file_exists(dirname(__DIR__) . '/vendor/autoload.php')){
+    die('Vendor does not exist. Please run "Composer install". For more informationen https://github.com/Froxlor/Froxlor/wiki');
+}
+
 require dirname(__DIR__) . '/vendor/autoload.php';
 
 use Froxlor\Database\Database;