diff --git a/lib/monitoring/counter.go b/lib/monitoring/counter.go
index 17d4e8972..6c8744014 100644
--- a/lib/monitoring/counter.go
+++ b/lib/monitoring/counter.go
@@ -24,14 +24,17 @@ func (c *Counter) String() string {
 	return strconv.FormatInt(c.i.Load(), 10)
 }
 
+// Add adds given delta to a counter value
 func (c *Counter) Add(delta int64) {
 	c.i.Add(delta)
 }
 
+// Set sets given value as counter value
 func (c *Counter) Set(value int64) {
 	c.i.Store(value)
 }
 
+// Get returns counter value
 func (c *Counter) Get() int64 {
 	return c.i.Load()
 }