diff --git a/internal/MqttService/MqttService.go b/internal/MqttService/MqttService.go
index 47574fe..216bc17 100644
--- a/internal/MqttService/MqttService.go
+++ b/internal/MqttService/MqttService.go
@@ -29,7 +29,7 @@ func (m *MqttService) pinCyclicCallback(pinName string, pinState PinControlServi
 	token := m.mqttClient.Publish(topic, 1, false, string(pinState))
 	go m._asyncWait(token, nil)
 }
-func (m *MqttService) controlCallback(client mqtt.Client, message mqtt.Message) {
+func (m *MqttService) controlCallback(_ mqtt.Client, message mqtt.Message) {
 	if pinNo, err := PinNameFromTopic(message.Topic()); err == nil {
 		if err := m.pinService.Command(pinNo, PinControlService.PinCommand(message.Payload())); err != nil {
 			log.Error(err.Error())