diff --git a/scripts/upgrade b/scripts/upgrade
index c7b7a28..e023277 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -24,6 +24,7 @@ final_path=$(ynh_app_setting_get --app=$app --key=final_path)
 db_name=$(ynh_app_setting_get --app=$app --key=db_name)
 db_user=$db_name
 db_pwd=$(ynh_app_setting_get --app=$app --key=psqlpwd)
+port=$(ynh_app_setting_get --app=$app --key=port)
 
 #=================================================
 # CHECK VERSION