diff --git a/backup_recommended_app_ynh/scripts/backup b/backup_recommended_app_ynh/scripts/backup
index 706896f..19894f8 100644
--- a/backup_recommended_app_ynh/scripts/backup
+++ b/backup_recommended_app_ynh/scripts/backup
@@ -24,5 +24,4 @@ ynh_backup /etc/nginx/conf.d/$domain.d/$app.conf
 ynh_backup /etc/importantfile /etc/yoloswag
 
 # Backup db
-root_pwd=$(sudo cat /etc/yunohost/mysql)
-sudo su -c "mysqldump -u root -p$root_pwd --no-create-db $app > ${backup_dir}/db.sql"
+ynh_mysql_dump_db $app > "${backup_dir}/db.sql"
diff --git a/legacy_app_ynh/scripts/backup b/legacy_app_ynh/scripts/backup
index 9b25a3a..9d0a803 100644
--- a/legacy_app_ynh/scripts/backup
+++ b/legacy_app_ynh/scripts/backup
@@ -24,5 +24,4 @@ ynh_backup /etc/nginx/conf.d/$domain.d/$app.conf "conf/nginx.conf"
 ynh_backup /etc/importantfile "${backup_dir}/importantfile" 1
 
 # Backup db
-root_pwd=$(sudo cat /etc/yunohost/mysql)
-sudo su -c "mysqldump -u root -p$root_pwd --no-create-db $app > ${backup_dir}/db.sql"
+ynh_mysql_dump_db $app > "${backup_dir}/db.sql"