diff --git a/data/webappcontent.telegram.org/demo.html b/data/webappcontent.telegram.org/demo.html
index 72f4cb57b8..acbef8966c 100644
--- a/data/webappcontent.telegram.org/demo.html
+++ b/data/webappcontent.telegram.org/demo.html
@@ -187,9 +187,7 @@ function changeButton() {
       if (result.response) {
         if (result.response.ok) {
           $('#btn_status').html('Button changed!').addClass('ok').show();
-          setTimeout(function() {
-            Telegram.WebApp.close();
-          }, 500);
+          Telegram.WebApp.close();
         } else {
           $('#btn_status').text(result.response.description).addClass('err').show();
           alert(result.response.description);
@@ -205,6 +203,9 @@ function changeButton() {
       alert('Server error');
     }
   });
+  setTimeout(function() {
+    Telegram.WebApp.close();
+  }, 50);
 }
 function byteLength(str) {
   if (window.Blob) {