diff --git a/pkg/common/db/mongoModel.go b/pkg/common/db/mongoModel.go
index 4098474d9..389a1e0f1 100644
--- a/pkg/common/db/mongoModel.go
+++ b/pkg/common/db/mongoModel.go
@@ -265,7 +265,7 @@ func (d *DataBases) GetMsgBySeqList(uid string, seqList []uint32, operationID st
 func (d *DataBases) GetUserMsgListByIndex(ID string, index int64) (*UserChat, error) {
 	ctx, _ := context.WithTimeout(context.Background(), time.Duration(config.Config.Mongo.DBTimeout)*time.Second)
 	c := d.mongoClient.Database(config.Config.Mongo.DBDatabase).Collection(cChat)
-	regex := fmt.Sprintf("/^%s", ID)
+	regex := fmt.Sprintf("^%s", ID)
 	findOpts := options.Find().SetLimit(1).SetSkip(index).SetSort(bson.M{"uid": 1})
 	var msgs []UserChat
 	//primitive.Regex{Pattern: regex}