diff --git a/internal/push/fcm/push.go b/internal/push/fcm/push.go
index 7c1f55d00..99338e558 100644
--- a/internal/push/fcm/push.go
+++ b/internal/push/fcm/push.go
@@ -5,7 +5,7 @@ import (
 	"Open_IM/pkg/common/config"
 	"Open_IM/pkg/common/db"
 	"Open_IM/pkg/common/log"
-	"Open_IM/pkg/tools"
+	"Open_IM/pkg/tools/splitter"
 	"context"
 	firebase "firebase.google.com/go"
 	"firebase.google.com/go/messaging"
@@ -62,7 +62,7 @@ func (f *Fcm) Push(accounts []string, alert, detailContent, operationID string,
 	}
 	Success := 0
 	Fail := 0
-	result := tools.NewSplitter(SinglePushCountLimit, Tokens).GetSplitResult()
+	result := splitter.NewSplitter(SinglePushCountLimit, Tokens).GetSplitResult()
 	Msg := new(messaging.MulticastMessage)
 	Msg.Notification = &messaging.Notification{}
 	Msg.Notification.Body = detailContent
diff --git a/internal/rpc/msg/send_msg.go b/internal/rpc/msg/send_msg.go
index 91d8ca1d3..d65f7b0ed 100644
--- a/internal/rpc/msg/send_msg.go
+++ b/internal/rpc/msg/send_msg.go
@@ -837,9 +837,9 @@ func Notification(n *NotificationMsg) {
 		ex = config.Config.Notification.ConversationSetPrivate.OfflinePush.Ext
 		reliabilityLevel = config.Config.Notification.ConversationSetPrivate.Conversation.ReliabilityLevel
 		unReadCount = config.Config.Notification.ConversationSetPrivate.Conversation.UnreadCount
-	case constant.DeleteMessageNotification:
+	case constant.DeleteMessageNotification, constant.SuperGroupUpdateNotification:
 		reliabilityLevel = constant.ReliableNotificationNoMsg
-	case constant.SuperGroupUpdateNotification, constant.ConversationUnreadNotification:
+	case constant.ConversationUnreadNotification:
 		reliabilityLevel = constant.UnreliableNotification
 	}
 	switch reliabilityLevel {
diff --git a/pkg/common/constant/constant.go b/pkg/common/constant/constant.go
index b81cb07d6..016b83dcb 100644
--- a/pkg/common/constant/constant.go
+++ b/pkg/common/constant/constant.go
@@ -64,7 +64,6 @@ const (
 	FriendRemarkSetNotification           = 1206 //set_friend_remark?
 	BlackAddedNotification                = 1207 //add_black
 	BlackDeletedNotification              = 1208 //remove_black
-	MsgDeleteNotification                 = 1209
 
 	ConversationOptChangeNotification = 1300 // change conversation opt
 
@@ -100,6 +99,7 @@ const (
 
 	SuperGroupNotificationBegin  = 1650
 	SuperGroupUpdateNotification = 1651
+	MsgDeleteNotification        = 1652
 	SuperGroupNotificationEnd    = 1699
 
 	ConversationPrivateChatNotification = 1701
diff --git a/pkg/tools/tools.go b/pkg/tools/splitter/tools.go
similarity index 97%
rename from pkg/tools/tools.go
rename to pkg/tools/splitter/tools.go
index a3baa5f3e..40bd7dee2 100644
--- a/pkg/tools/tools.go
+++ b/pkg/tools/splitter/tools.go
@@ -1,4 +1,4 @@
-package tools
+package splitter
 
 type SplitResult struct {
 	Item []string