diff --git a/backup.sh b/backup.sh
index ddaeeb0..ecc8df1 100644
--- a/backup.sh
+++ b/backup.sh
@@ -4,8 +4,8 @@
 # This file is part of the LAMP script.
 #
 # LAMP is a powerful bash script for the installation of 
-# Apache + PHP + MySQL/MariaDB/Percona and so on.
-# You can install Apache + PHP + MySQL/MariaDB/Percona in an very easy way.
+# Apache + PHP + MySQL/MariaDB and so on.
+# You can install Apache + PHP + MySQL/MariaDB in an very easy way.
 # Just need to input numbers to choose what you want to install before installation.
 # And all things will be done in a few minutes.
 #
@@ -16,7 +16,7 @@
 # Github:   https://github.com/teddysun/lamp
 #
 # You must to modify the config before run it!!!
-# Backup MySQL/MariaDB/Percona datebases, files and directories
+# Backup MySQL/MariaDB datebases, files and directories
 # Backup file is encrypted with AES256-cbc with SHA1 message-digest (option)
 # Auto transfer backup file to Google Drive (need install rclone command) (option)
 # Auto transfer backup file to FTP server (option)