diff --git a/aiogram/dispatcher/filters/builtin.py b/aiogram/dispatcher/filters/builtin.py
index c32c53be..1e6534a6 100644
--- a/aiogram/dispatcher/filters/builtin.py
+++ b/aiogram/dispatcher/filters/builtin.py
@@ -4,7 +4,7 @@ import typing
 import warnings
 from contextvars import ContextVar
 from dataclasses import dataclass, field
-from typing import Any, Dict, Iterable, Optional, Union
+from typing import Any, Dict, Iterable, List, Optional, Union
 
 from babel.support import LazyProxy
 
@@ -111,6 +111,7 @@ class Command(Filter):
             return False
 
         full_command = text.split()[0]
+        args = text.split()[1:]
         prefix, (command, _, mention) = full_command[0], full_command[1:].partition('@')
 
         if not ignore_mention and mention and (await message.bot.me).username.lower() != mention.lower():
@@ -120,7 +121,7 @@ class Command(Filter):
         if (command.lower() if ignore_case else command) not in commands:
             return False
 
-        return {'command': cls.CommandObj(command=command, prefix=prefix, mention=mention)}
+        return {'command': cls.CommandObj(command=command, prefix=prefix, mention=mention, args=args)}
 
     @dataclass
     class CommandObj:
@@ -137,7 +138,7 @@ class Command(Filter):
         """Mention (if available)"""
         mention: str = None
         """Command argument"""
-        args: str = field(repr=False, default=None)
+        args: List[str] = field(repr=False, default_factory=list)
 
         @property
         def mentioned(self) -> bool:
@@ -159,7 +160,7 @@ class Command(Filter):
             if self.mentioned:
                 line += '@' + self.mention
             if self.args:
-                line += ' ' + self.args
+                line += ' ' + ' '.join(self.args)
             return line