diff --git a/def.go b/def.go
index 664bda4..a253ff0 100644
--- a/def.go
+++ b/def.go
@@ -9,7 +9,7 @@ import (
 )
 
 type DataBackup struct {
-	Messages []*ChatWarsMessage `json:"messages"`
+	Messages []ChatWarsMessage `json:"messages"`
 }
 
 type MQKeepAlive struct {
diff --git a/msg.go b/msg.go
index 752ce4e..f7dbda8 100644
--- a/msg.go
+++ b/msg.go
@@ -275,13 +275,13 @@ func parseSubTypeMessagePillageInc(m *ChatWarsMessage, r *regexp.Regexp) (*ChatW
 
 func zipMessages() ([]byte, error) {
 	bkp := DataBackup{}
-	msgs := new([]*ChatWarsMessage)
+	msgs := new([]ChatWarsMessage)
 	ids := getSQLListID64(`SELECT om.obj_id id FROM obj_msg om;`)
 	for _, id := range ids {
 		m, err := getMsg(id)
 		logOnError(err, "zipMessages : getMsg")
 		if err == nil {
-			append(*msgs, m)
+			append(*msgs, *m)
 		}
 	}
 	bkp.Messages = *msgs