diff --git a/src/SpBundle/Resources/views/default/sp.html.twig b/src/SpBundle/Resources/views/default/sp.html.twig
index 59d837ed..4bad7ac9 100644
--- a/src/SpBundle/Resources/views/default/sp.html.twig
+++ b/src/SpBundle/Resources/views/default/sp.html.twig
@@ -51,7 +51,7 @@
 
     <script src="https://cdn.jsdelivr.net/npm/js-cookie@2/src/js.cookie.min.js"></script>
     <script>
-        jQuery('#locale-cookie').on('change', (input) => {
+        jQuery('#locale-cookie').on('change', function (input) {
             Cookies.set('stepup_locale', input.target.value);
         });
     </script>