diff --git a/scripts/change_url b/scripts/change_url
index b27335b..231e438 100644
--- a/scripts/change_url
+++ b/scripts/change_url
@@ -35,6 +35,7 @@ db_name=$(ynh_app_setting_get --app=$app --key=db_name)
 db_user=$db_name
 db_pwd=$(ynh_app_setting_get --app=$app --key=psqlpwd)
 redis_db=$(ynh_app_setting_get --app=$app --key=redis_db)
+port=$(ynh_app_setting_get --app=$app --key=port)
 
 #=================================================
 # BACKUP BEFORE UPGRADE THEN ACTIVE TRAP