diff --git a/server/gameserver/room.cc b/server/gameserver/room.cc
index 8c7b1f3..78d20cb 100644
--- a/server/gameserver/room.cc
+++ b/server/gameserver/room.cc
@@ -332,6 +332,7 @@ void Room::FillSMJoinedNotify(Player* self_hum, cs::SMJoinedNotify& msg)
     msg.set_team_mode(msg.team_mode());
     msg.set_player_id(self_hum->entity_uniid);
     msg.set_started(false);
+    msg.set_room_uuid(a8::XValue(room_uuid).GetString());
     #if 0
     for (auto& pair : uniid_hash_) {
         if (pair.second->entity_type == ET_Player) {