diff --git a/lib/Zabbix/Agent/Addons/UPS.pm b/lib/Zabbix/Agent/Addons/UPS.pm
index da45828..721fc80 100644
--- a/lib/Zabbix/Agent/Addons/UPS.pm
+++ b/lib/Zabbix/Agent/Addons/UPS.pm
@@ -16,3 +16,5 @@ sub list_ups {
   }
   return @ups;
 };
+
+1;