diff --git a/scripts/upgrade b/scripts/upgrade
index 0df0ba7..abc2c5d 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -17,6 +17,7 @@ ynh_script_progression --message="Loading installation settings..." --weight=1
 app=$YNH_APP_INSTANCE_NAME
 
 domain=$(ynh_app_setting_get --app=$app --key=domain)
+user_domain=$(ynh_app_setting_get --app=$app --key=user_domain)
 path_url=$(ynh_app_setting_get --app=$app --key=path)
 language=$(ynh_app_setting_get --app=$app --key=language)
 admin=$(ynh_app_setting_get --app=$app --key=admin)