diff --git a/router.py b/router.py
index 9a08027..5aeacb7 100644
--- a/router.py
+++ b/router.py
@@ -19,7 +19,7 @@ class Router:
         self,
         name: str,
         caption: str | dict[str, str] | None = None,
-        pre_check: Callable[[Union[Message, CallbackQuery], Any], bool] | None = None,
+        pre_check: Callable[[CommandCallbackContext], bool] | None = None,
         show_in_bot_commands: bool = False,
         register_navigation: bool = True,
         clear_navigation: bool = False,