diff --git a/msg.go b/msg.go
index 3de7fb0..cd64c80 100644
--- a/msg.go
+++ b/msg.go
@@ -333,6 +333,7 @@ func UnzipMessages(z []byte) error {
 	}
 
 	for _, f := range zr.File {
+		log.Printf("File : %s\n", f.Name)
 		if strings.Compare(f.Name, "backup.json") == 0 {
 			rc, err := f.Open()
 			logOnError(err, "UnzipMessages : Open")
@@ -343,9 +344,11 @@ func UnzipMessages(z []byte) error {
 			err = json.NewDecoder(rc).Decode(bkp)
 			rc.Close()
 			log.Printf("UnzipMessages : %d messages.\n", len(bkp.Messages))
+			return nil
 		}
-		log.Printf("File : %s\n", f.Name)
 	}
 
+	log.Printf("Not backup file found.\n")
+
 	return nil
 }