diff --git a/scripts/install b/scripts/install
index afb7ac2..9be83fd 100755
--- a/scripts/install
+++ b/scripts/install
@@ -66,7 +66,7 @@ ynh_app_setting_set --app=$app --key=port --value=$port
 if [ $mpd_port -eq 1 ]; then
 	mpd_port=$(ynh_find_port --port=6600)
 	ynh_app_setting_set --app=$app --key=mpd_port --value=$mpd_port
-	ynh_exec_warn_less yunohost firewall allow --no-upnp Both $mpd_port
+	ynh_exec_warn_less yunohost firewall allow --no-upnp TCP $mpd_port
 	mpd_state="true"
 else
 	mpd_state="false"