diff --git a/script.php b/script.php
index 71e76ce..d92082c 100644
--- a/script.php
+++ b/script.php
@@ -122,7 +122,7 @@ if(php_sapi_name() == 'cli' || $_SERVER["REQUEST_URI"] == '/metrics') {
 
     $loader = new \Twig\Loader\FilesystemLoader('templates');
     $twig = new \Twig\Environment($loader, [
-        'cache' => 'twig-cache',
+        'cache' => 'twig_cache',
     ]);
     echo $twig->render('metrics.twig', ['config' => $config]);
 }