diff --git a/scripts/backup b/scripts/backup
index daf462c..c7d6cbd 100644
--- a/scripts/backup
+++ b/scripts/backup
@@ -14,11 +14,11 @@ db_pwd=$(sudo yunohost app setting ${APP} db_pwd)
 
 # Backup app files
 sudo mkdir -p "${BACKUP_DIR}/www"
-sudo cp -a /var/www/$app/. "${BACKUP_DIR}/www"
+sudo cp -a /var/www/${APP}/. "${BACKUP_DIR}/www"
 
 # Backup conf files
 sudo mkdir -p "${BACKUP_DIR}/conf"
-sudo cp -a /etc/nginx/conf.d/$domain.d/$app.conf "${BACKUP_DIR}/conf/${APP}.conf"
+sudo cp -a /etc/nginx/conf.d/$domain.d/${APP}.conf "${BACKUP_DIR}/conf/${APP}.conf"
 sudo cp -a /etc/logrotate.d/${APP} "${BACKUP_DIR}/conf/${APP}"
 sudo cp -a /etc/init.d/seafile-server "${BACKUP_DIR}/conf/seafile-server"