diff --git a/scripts/upgrade b/scripts/upgrade
index 90839a5..aa9ad8b 100755
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -11,6 +11,7 @@ source /usr/share/yunohost/helpers
 app=$YNH_APP_INSTANCE_NAME
 domain=$(ynh_app_setting_get "$app" domain)
 path=$(ynh_app_setting_get "$app" path)
+port=$(ynh_app_setting_get "$app" port)
 arch=$(ynh_app_setting_get "$app" arch)
 version=$(cat ../conf/upstream_version)