diff --git a/metric/syncfloat64.go b/metric/syncfloat64.go
index 1efd19dc621..1b00a7f6c15 100644
--- a/metric/syncfloat64.go
+++ b/metric/syncfloat64.go
@@ -133,8 +133,8 @@ type Float64Histogram interface {
 	Record(ctx context.Context, incr float64, options ...RecordOption)
 }
 
-// Float64HistogramConfig contains options for synchronous counter instruments
-// that record float64 values.
+// Float64HistogramConfig contains options for synchronous histogram
+// instruments that record float64 values.
 type Float64HistogramConfig struct {
 	description              string
 	unit                     string
diff --git a/metric/syncint64.go b/metric/syncint64.go
index 0dcbf06db99..ec96c7f1816 100644
--- a/metric/syncint64.go
+++ b/metric/syncint64.go
@@ -133,7 +133,7 @@ type Int64Histogram interface {
 	Record(ctx context.Context, incr int64, options ...RecordOption)
 }
 
-// Int64HistogramConfig contains options for synchronous counter instruments
+// Int64HistogramConfig contains options for synchronous histogram instruments
 // that record int64 values.
 type Int64HistogramConfig struct {
 	description              string