From b9424106a71df0857e8456e6b7f77d9b0d6e1401 Mon Sep 17 00:00:00 2001
From: Egor <egor.birdi7@gmail.com>
Date: Mon, 22 Jun 2020 23:25:25 +0500
Subject: [PATCH] fix: respect type hints

---
 aiogram/dispatcher/filters/builtin.py | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/aiogram/dispatcher/filters/builtin.py b/aiogram/dispatcher/filters/builtin.py
index 25d4c029..9c56e2d7 100644
--- a/aiogram/dispatcher/filters/builtin.py
+++ b/aiogram/dispatcher/filters/builtin.py
@@ -706,6 +706,9 @@ class ChatTypeFilter(BoundFilter):
     async def check(self, obj: Union[Message, CallbackQuery]):
         if isinstance(obj, Message):
             obj = obj.chat
-        if isinstance(obj, CallbackQuery):
+        elif isinstance(obj, CallbackQuery):
             obj = obj.message.chat
+        else: 
+            raise NotImplementedError
+
         return obj.type in self.chat_type