diff --git a/cmd/thor/main.go b/cmd/thor/main.go
index 0f6a7f58a..360e640b1 100644
--- a/cmd/thor/main.go
+++ b/cmd/thor/main.go
@@ -241,7 +241,7 @@ func defaultAction(ctx *cli.Context) error {
 	}
 	defer func() { log.Info("stopping API server..."); srvCloser() }()
 
-	printStartupMessage2(gene, apiURL, p2pCommunicator.Enode(),metricsURL)
+	printStartupMessage2(gene, apiURL, p2pCommunicator.Enode(), metricsURL)
 
 	if err := p2pCommunicator.Start(); err != nil {
 		return err
diff --git a/metrics/telemetry.go b/metrics/telemetry.go
index 26dbc1aec..97e1c74c6 100644
--- a/metrics/telemetry.go
+++ b/metrics/telemetry.go
@@ -70,7 +70,7 @@ func CounterVec(name string, labels []string) CountVecMeter {
 	return metrics.GetOrCreateCountVecMeter(name, labels)
 }
 
-// GaugeMeter ...
+// GaugeMeter is a metric that represents a single numeric value, which can arbitrarily go up and down.
 type GaugeMeter interface {
 	Add(int64)
 }
@@ -79,7 +79,8 @@ func Gauge(name string) GaugeMeter {
 	return metrics.GetOrCreateGaugeMeter(name)
 }
 
-// GaugeVecMeter ...
+// GaugeVecMeter is a metric that represents a single numeric value, which can arbitrarily go up and down
+// with multiple labels.
 type GaugeVecMeter interface {
 	GaugeWithLabel(int64, map[string]string)
 }