diff --git a/scripts/backup b/scripts/backup
index 76e3ea0..8655c7c 100755
--- a/scripts/backup
+++ b/scripts/backup
@@ -29,6 +29,7 @@ app=$YNH_APP_INSTANCE_NAME
 
 final_path=$(ynh_app_setting_get --app=$app --key=final_path)
 domain=$(ynh_app_setting_get --app=$app --key=domain)
+user_domain=$(ynh_app_setting_get --app=$app --key=user_domain)
 db_name=$(ynh_app_setting_get --app=$app --key=db_name)
 log_path=$(ynh_app_setting_get --app=$app --key=log_path)
 etc_path=$(ynh_app_setting_get --app=$app --key=etc_path)