diff --git a/app.js b/app.js
index 2dada6c..5f7ce33 100644
--- a/app.js
+++ b/app.js
@@ -22,8 +22,9 @@ app.get('/', basicAuth(users), (req, res) => {
   return res.send('Received a GET HTTP method');
 });
 
-app.listen(process.env.PORT, () =>
-  console.log(`Example app listening on port ${process.env.PORT}!`),
+const port = process.env.PORT || 3000;
+app.listen(port, () =>
+  console.log(`Example app listening on port ${port}!`),
 );
 
 const token = process.env.BOT_TOKEN;
@@ -64,7 +65,7 @@ let chat = utils.loadChat();
 let jointArray = navigation.concat(chat);
 
 
-const bot = new TelegramBot(token, { polling: true });
+const bot = new TelegramBot(token, { polling: true, cancelThrottledRequest: true });
 
 bot.on('new_chat_members', (msg) => {
   bot_welcome.welcomeMessage(bot, msg, logger)