diff --git a/aiogram/fsm/scene.py b/aiogram/fsm/scene.py
index c5052008..32502296 100644
--- a/aiogram/fsm/scene.py
+++ b/aiogram/fsm/scene.py
@@ -120,7 +120,7 @@ class ObserverDecorator:
         handlers = getattr(target, "__aiogram_handler__", None)
         if not handlers:
             handlers = []
-            target.__aiogram_handler__ = handlers
+            target.__aiogram_handler__ = handlers  # type: ignore[union-attr]
 
         handlers.append(
             HandlerContainer(
@@ -137,7 +137,7 @@ class ObserverDecorator:
         action = getattr(target, "__aiogram_action__", None)
         if action is None:
             action = defaultdict(dict)
-            target.__aiogram_action__ = action
+            target.__aiogram_action__ = action  # type: ignore[attr-defined]
         action[self.action][self.name] = CallableObject(target)
 
     def __call__(self, target: CallbackType) -> CallbackType:
diff --git a/aiogram/types/message.py b/aiogram/types/message.py
index fe0476f6..91434ee7 100644
--- a/aiogram/types/message.py
+++ b/aiogram/types/message.py
@@ -4353,7 +4353,7 @@ class Message(MaybeInaccessibleMessage):
         :param include_thread_id: if set, adds chat thread id to URL and returns like https://t.me/username/thread_id/message_id
         :return: string with full message URL
         """
-        if self.chat.type in ("private", "group"):
+        if self.chat.type in {"private", "group"}:
             return None
 
         chat_value = (