diff --git a/telethon/tl/custom/message.py b/telethon/tl/custom/message.py
index 28fd7b87..b4f784f5 100644
--- a/telethon/tl/custom/message.py
+++ b/telethon/tl/custom/message.py
@@ -205,7 +205,7 @@ class Message(ChatGetter, SenderGetter, TLObject):
             noforwards: Optional[bool] = None,
             invert_media: Optional[bool] = None,
             reactions: Optional[types.TypeMessageReactions] = None,
-            restriction_reason: Optional[types.TypeRestrictionReason] = None,
+            restriction_reason: Optional[List[types.TypeRestrictionReason]] = None,
             forwards: Optional[int] = None,
             replies: Optional[types.TypeMessageReplies] = None,