diff --git a/data/webappcontent.telegram.org/demo.html b/data/webappcontent.telegram.org/demo.html
index 52e077fbed..6d48737571 100644
--- a/data/webappcontent.telegram.org/demo.html
+++ b/data/webappcontent.telegram.org/demo.html
@@ -138,6 +138,8 @@
     </section>
     <script src="/js/jquery.min.js"></script>
     <script>
+Telegram.WebApp.ready();
+
 var WebAppData = Telegram.WebApp.initData || {};
 var WebAppDataRaw = Telegram.WebApp.initDataRaw || '';