diff --git a/main.go b/main.go
index b8e32a5..b1d7742 100644
--- a/main.go
+++ b/main.go
@@ -39,7 +39,7 @@ var (
 	journalLog      = flag.Bool("journal", false, "Log to systemd journal instead of stdout")
 	configFlag      = flag.String("config", "config.yaml", "Set config file to use")
 	reBandwidth     = regexp.MustCompile(`(?m)bandwidth\s(\d+)Mbit`)
-	NoResponseError = errors.New("no response")
+	ErrorNoResponse = errors.New("no response")
 )
 
 type UploadManager struct {
@@ -47,7 +47,7 @@ type UploadManager struct {
 }
 
 func (m UploadManager) Upload() (float64, error) {
-	tcCmd := exec.Command("tc", "qdisc", "show", "dev", conf.UploadInterface)
+	tcCmd := exec.Command("tc", "qdisc", "show", "dev", conf.UploadInterface) //nolint:gosec
 	out, err := tcCmd.CombinedOutput()
 	if err != nil {
 		return 0, err
@@ -64,7 +64,8 @@ func (m UploadManager) Upload() (float64, error) {
 }
 
 func (m UploadManager) SetUpload(upload float64) (float64, error) {
-	tcCmd := exec.Command("tc", "qdisc", "change", "dev", conf.UploadInterface, "root", "cake", "bandwidth", fmt.Sprintf("%dMbit", int(upload)))
+	tcCmd := exec.Command("tc", "qdisc", "change", "dev", conf.UploadInterface, "root", "cake", "bandwidth", //nolint:gosec
+		fmt.Sprintf("%dMbit", int(upload)))
 	log.Debugf("[TC] exec %s", tcCmd.String())
 	out, err := tcCmd.CombinedOutput()
 	if err != nil {
@@ -115,9 +116,10 @@ func doPing(host string, count int, interval time.Duration) (*ping.Statistics, e
 	if err != nil {
 		return nil, err
 	}
-	log.Debugf("[PING] %s: %s±%s %d%% loss", host, pinger.Statistics().AvgRtt, pinger.Statistics().StdDevRtt, pinger.Statistics().PacketLoss)
+	log.Debugf("[PING] %s: %s±%s %d%% loss", host, pinger.Statistics().AvgRtt, pinger.Statistics().StdDevRtt,
+		int(pinger.Statistics().PacketLoss))
 	if pinger.Statistics().PacketLoss == 100 {
-		return nil, NoResponseError
+		return nil, ErrorNoResponse
 	}
 	return pinger.Statistics(), nil
 }
@@ -192,7 +194,7 @@ outerLoop:
 				stats, err = doPing(conf.Host, conf.ConformationPPP, time.Second)
 				if err != nil {
 					log.Warningf("ping to %s failed: %v", conf.Host, err)
-					if !errors.Is(err, NoResponseError) {
+					if !errors.Is(err, ErrorNoResponse) {
 						time.Sleep(time.Duration(conf.Interval) * time.Minute)
 					}
 					continue
@@ -244,11 +246,7 @@ func main() {
 		}
 	}()
 
-killLoop:
-	for {
-		select {
-		case <-killSignals:
-			break killLoop
-		}
+	for range killSignals {
+		break
 	}
 }