diff --git a/src/Symfony/Bundle/WebProfilerBundle/Resources/views/Profiler/base_js.html.twig b/src/Symfony/Bundle/WebProfilerBundle/Resources/views/Profiler/base_js.html.twig
index fbe3c0794314b..3764d9782acfb 100644
--- a/src/Symfony/Bundle/WebProfilerBundle/Resources/views/Profiler/base_js.html.twig
+++ b/src/Symfony/Bundle/WebProfilerBundle/Resources/views/Profiler/base_js.html.twig
@@ -351,7 +351,7 @@ if (typeof Sfjs === 'undefined' || typeof Sfjs.loadToolbar === 'undefined') {
 
                     /* prevent logging AJAX calls to static and inline files, like templates */
                     var path = url;
-                    if (url.substr(0, 1) === '/') {
+                    if (url.startsWith('/')) {
                         if (0 === url.indexOf('{{ request.basePath|e('js') }}')) {
                             path = url.substr({{ request.basePath|length }});
                         }