diff --git a/scripts/install b/scripts/install
index e5bc27f..aa228d8 100644
--- a/scripts/install
+++ b/scripts/install
@@ -85,7 +85,7 @@ if [ $discovery -eq 1 ]; then
 	fi
 
 	# Open port 7359 for client auto-discovery
-	if [[ $(ynh_port_available --port=7359) -eq 0 ]]; then
+	if ynh_port_available --port=7359; then
 		ynh_exec_warn_less yunohost firewall allow UDP 7359
 		ynh_app_setting_set --app=$app --key=discovery_client --value=1
 	else