diff --git a/common/bytes.go b/common/bytes.go
index 59ff458127..291e784fe9 100644
--- a/common/bytes.go
+++ b/common/bytes.go
@@ -14,7 +14,6 @@
 // You should have received a copy of the GNU Lesser General Public License
 // along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
 
-// Package common contains various helper functions.
 package common
 
 import (
@@ -106,7 +105,7 @@ func Hex2Bytes(str string) []byte {
 	return h
 }
 
-func Hex2BytesFixed(str string, flen int) []byte {
+func HexToBytesFixed(str string, flen int) []byte {
 	h, _ := hex.DecodeString(str)
 	if len(h) == flen {
 		return h
diff --git a/common/pkgdoc.go b/common/pkgdoc.go
new file mode 100644
index 0000000000..72d08f8159
--- /dev/null
+++ b/common/pkgdoc.go
@@ -0,0 +1,18 @@
+// Copyright 2014 The go-ethereum Authors
+// This file is part of the go-ethereum library.
+//
+// The go-ethereum library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Lesser General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// The go-ethereum library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License
+// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
+
+// Package common contains various helper functions.
+package common