diff --git a/protocol/msgpack/aggregated_encoder_test.go b/protocol/msgpack/aggregated_encoder_test.go
index 3f53531..df0beab 100644
--- a/protocol/msgpack/aggregated_encoder_test.go
+++ b/protocol/msgpack/aggregated_encoder_test.go
@@ -163,7 +163,7 @@ func TestAggregatedEncoderReset(t *testing.T) {
 }
 
 func TestAggregatedEncoderNilOptions(t *testing.T) {
-	// use constructor directly here to test nil options
+	// Use constructor directly here to test nil options.
 	encoder := NewAggregatedEncoder(NewBufferedEncoder(), nil).(*aggregatedEncoder)
 	encoder.encodeMetricAsRaw(testMetric)
 	require.NoError(t, encoder.err())