diff --git a/z/histogram.go b/z/histogram.go
index 25d57516..6c9a85f3 100644
--- a/z/histogram.go
+++ b/z/histogram.go
@@ -175,6 +175,7 @@ func (histogram *HistogramData) Percentile(p float64) float64 {
 	return histogram.Bounds[len(histogram.Bounds)-1]
 }
 
+// Clear reset the histogram. Helpful in situations where we need to reset the metrics
 func (histogram *HistogramData) Clear() {
 	if histogram == nil {
 		return