diff --git a/aiogram/dispatcher/handler.py b/aiogram/dispatcher/handler.py
index e60d51f5..c721369b 100644
--- a/aiogram/dispatcher/handler.py
+++ b/aiogram/dispatcher/handler.py
@@ -65,7 +65,7 @@ class Handler:
             if await check_filters(filters, args):
                 try:
                     if self.middleware_key:
-                        context.set_value('$handler', handler)
+                        context.set_value('handler', handler)
                         await self.dispatcher.middleware.trigger(f"process_{self.middleware_key}", args)
                     response = await handler(*args)
                     if results is not None: