diff --git a/examples/asynchronous_telebot/chat_member_example.py b/examples/asynchronous_telebot/chat_member_example.py
index 30f47e2..b2f545c 100644
--- a/examples/asynchronous_telebot/chat_member_example.py
+++ b/examples/asynchronous_telebot/chat_member_example.py
@@ -31,4 +31,4 @@ async def my_chat_m(message: types.ChatMemberUpdated):
 async def delall(message: types.Message):
     await bot.delete_message(message.chat.id,message.message_id)
 import asyncio
-asyncio.run(bot.polling())
+asyncio.run(bot.polling(allowed_updates=util.update_types))
diff --git a/telebot/async_telebot.py b/telebot/async_telebot.py
index 2ab6f4a..7b45ed9 100644
--- a/telebot/async_telebot.py
+++ b/telebot/async_telebot.py
@@ -318,7 +318,7 @@ class AsyncTeleBot:
                 except Exception as e:
                     handler_error = e
 
-                    if not middleware:
+                    if not middlewares:
                         if self.exception_handler:
                             return self.exception_handler.handle(e)
                         logging.error(str(e))