diff --git a/examples/middleware_and_antiflood.py b/examples/middleware_and_antiflood.py
index 7986bf3f..f0238dec 100644
--- a/examples/middleware_and_antiflood.py
+++ b/examples/middleware_and_antiflood.py
@@ -46,7 +46,7 @@ class ThrottlingMiddleware(BaseMiddleware):
         self.prefix = key_prefix
         super(ThrottlingMiddleware, self).__init__()
 
-    async def on_process_message(self, message: types.Message):
+    async def on_process_message(self, message: types.Message, *args):
         """
         This handler is called when dispatcher receives a message