diff --git a/wshandler/room.go b/wshandler/room.go
index c04a946..762e165 100644
--- a/wshandler/room.go
+++ b/wshandler/room.go
@@ -55,6 +55,7 @@ func (r *room) loop(ctx context.Context, conns *map[string]*wsconn) (normalEnd b
 		}
 	}()
 
+	tag := "#" + r.name
 	for {
 		select {
 		case <-ctx.Done():
@@ -70,7 +71,7 @@ func (r *room) loop(ctx context.Context, conns *map[string]*wsconn) (normalEnd b
 			ds := DownstreamMessage{
 				Alias: msg.Alias,
 				Body:  msg.Body,
-				Tag:   append(msg.Tag, r.name),
+				Tag:   append(msg.Tag, tag),
 			}
 			bt, _ := json.Marshal(ds)