diff --git a/scripts/upgrade b/scripts/upgrade
index 72cdcbd..79c845d 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -76,7 +76,7 @@ ynh_add_nginx_config
 # Create a dedicated systemd config
 ynh_add_systemd_config
 
-yunohost service add $app --description="Ads & trackers blocking DNS server" --needs_exposed_ports $adguard_port
+yunohost service add $app --description="Ads & trackers blocking DNS server" --needs_exposed_ports $port_adguard
 
 #=================================================
 # SPECIFIC UPGRADE