diff --git a/packages/nonebot-adapter-mirai/nonebot/adapters/mirai/event/request.py b/packages/nonebot-adapter-mirai/nonebot/adapters/mirai/event/request.py
index 3081b8b4..d57af767 100644
--- a/packages/nonebot-adapter-mirai/nonebot/adapters/mirai/event/request.py
+++ b/packages/nonebot-adapter-mirai/nonebot/adapters/mirai/event/request.py
@@ -91,7 +91,8 @@ class MemberJoinRequestEvent(RequestEvent):
                                       'eventId': self.event_id,
                                       'groupId': self.group_id,
                                       'fromId': self.from_id,
-                                      'operate': 0
+                                      'operate': 0,
+                                      'message': ''
                                   })
 
     async def reject(self,
@@ -147,7 +148,8 @@ class BotInvitedJoinGroupRequestEvent(RequestEvent):
                                       'eventId': self.event_id,
                                       'groupId': self.group_id,
                                       'fromId': self.from_id,
-                                      'operate': 0
+                                      'operate': 0,
+                                      'message': ''
                                   })
 
     async def reject(self, bot: "Bot", message: str = ""):