diff --git a/internal/rpc/msg/send.go b/internal/rpc/msg/send.go
index 15a6b6da8..2c3f8c0a3 100644
--- a/internal/rpc/msg/send.go
+++ b/internal/rpc/msg/send.go
@@ -100,7 +100,7 @@ func (m *msgServer) setConversationAtInfo(nctx context.Context, msg *sdkws.MsgDa
 
 		memberUserIDList = datautil.DeleteElems(memberUserIDList, msg.SendID)
 
-		atUserID = datautil.Single([]string{constant.AtAllString}, atUserID)
+		atUserID = datautil.Single([]string{constant.AtAllString}, msg.AtUserIDList)
 
 		if len(atUserID) == 0 { // just @everyone
 			conversation.GroupAtType = &wrapperspb.Int32Value{Value: constant.AtAll}