diff --git a/html/main.html b/html/main.html
index 0c244369e2..2c623c6379 100644
--- a/html/main.html
+++ b/html/main.html
@@ -16,7 +16,7 @@
         <link rel="icon" href="{{basePath}}{{faviconPath}}" type="image/x-icon">
         <link rel="shortcut icon" href="{{basePath}}{{faviconPath}}" type="image/x-icon">
         <script type="text/javascript">
-            $(() => {
+            window.addEventListener('DOMContentLoaded', () => {
                 Espo.loader.setCacheTimestamp({{cacheTimestamp}});
                 Espo.loader.setBasePath('{{basePath}}');