diff --git a/app/config/bootstrap/libraries.php b/app/config/bootstrap/libraries.php
index a68d4de2b..d5fb02f4c 100644
--- a/app/config/bootstrap/libraries.php
+++ b/app/config/bootstrap/libraries.php
@@ -54,7 +54,7 @@
 define('LITHIUM_APP_PATH', realpath(dirname(dirname(__DIR__))));
 
 if (!defined('NN_ROOT')) {
-	define('NN_ROOT', realpath(dirname(dirname(LITHIUM_APP_PATH)) . DS));
+	define('NN_ROOT', realpath(dirname(LITHIUM_APP_PATH)) . DS);
 }
 
 /**