diff --git a/vk/tasks.py b/vk/tasks.py
index abb1745..05497fb 100644
--- a/vk/tasks.py
+++ b/vk/tasks.py
@@ -4,7 +4,6 @@ import traceback
 from asyncio import sleep
 
 from vkbottle import API, bold
-from vkbottle_types.codegen.objects import UsersFields
 
 from messages import *
 
@@ -13,7 +12,7 @@ from vk.handlers.user import format_rating
 from vk.utils import *
 
 
-async def cleanup_chats(api: API):
+async def cleanup_chats(_api: API):
     # TODO
     pass
 
@@ -73,8 +72,8 @@ async def check_birthdays(api: API):
             continue
 
         chat_id = chat['chat_id']
-        members = await api.messages.get_conversation_members(peer_id=chat_id, extended=False,
-                                                              fields=[UsersFields.BDATE])
+        # noinspection PyTypeChecker
+        members = await api.messages.get_conversation_members(peer_id=chat_id, fields=['bdate'])
         today = datetime.datetime.today()
 
         for item in members.items: