diff --git a/pdu/pdu.go b/pdu/pdu.go
index 0f4c15b..ba00d95 100644
--- a/pdu/pdu.go
+++ b/pdu/pdu.go
@@ -28,11 +28,8 @@ type (
 
 func (p *PDU_HEADER) Encode() ([]uint8, error) {
 	buf := make([]uint8, 16)
-	binary.BigEndian.PutUint32(buf[0:4], p.command_length)
-	binary.BigEndian.PutUint32(buf[4:8], p.command_id)
-	binary.BigEndian.PutUint32(buf[8:12], p.command_status)
-	binary.BigEndian.PutUint32(buf[12:16], p.sequence_number)
-	return buf, nil
+	err := p.EncodeInto(&buf)
+	return buf, err
 }
 func (p *PDU_HEADER) EncodeInto(buf *[]uint8) error {
 	if buf == nil {