diff --git a/internal/msggateway/online.go b/internal/msggateway/online.go
index 611ecbd79..a4a1c1f15 100644
--- a/internal/msggateway/online.go
+++ b/internal/msggateway/online.go
@@ -25,7 +25,7 @@ func (ws *WsServer) ChangeOnlineStatus(concurrent int) {
 
 	for i := 0; i < concurrent; i++ {
 		requestChs[i] = make(chan *pbuser.SetUserOnlineStatusReq, 64)
-		changeStatus[i] = make([]UserState, 100)
+		changeStatus[i] = make([]UserState, 0, 100)
 	}
 
 	mergeTicker := time.NewTicker(time.Second)