diff --git a/src/pkg/encoding/binary/binary.go b/src/pkg/encoding/binary/binary.go
index 77ff3a9f3e..ee2f23dbba 100644
--- a/src/pkg/encoding/binary/binary.go
+++ b/src/pkg/encoding/binary/binary.go
@@ -2,8 +2,9 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-// This package implements translation between
-// unsigned integer values and byte sequences.
+// Package binary implements translation between
+// unsigned integer values and byte sequences
+// and the reading and writing of fixed-size values.
 package binary
 
 import (