diff --git a/smime/smime.go b/smime/smime.go
index bdc96bf..4761cef 100644
--- a/smime/smime.go
+++ b/smime/smime.go
@@ -1,6 +1,6 @@
-//Package smime implants parts of the S/MIME 4.0 specification rfc5751-bis-12.
+// Package smime implants parts of the S/MIME 4.0 specification rfc5751-bis-12.
 //
-//See https://www.ietf.org/id/draft-ietf-lamps-rfc5751-bis-12.txt
+// See https://www.ietf.org/id/draft-ietf-lamps-rfc5751-bis-12.txt
 package smime
 
 import (
@@ -251,19 +251,19 @@ func (smime *SMIME) Sign(msg []byte) (signedMsg []byte, err error) {
 		return
 	}
 	signedPart.SetHeaderField([]byte("Content-Type"), contentType[0])
-	contentTransferEncoding := mail.GetHeaderField([]byte("Content-Transfer-Encoding"))
-	if len(contentType) == 1 {
-		signedPart.SetHeaderField([]byte("Content-Transfer-Encoding"), contentTransferEncoding[0])
-	}
-	contentDisposition := mail.GetHeaderField([]byte("Content-Disposition"))
-	if len(contentType) == 1 {
-		signedPart.SetHeaderField([]byte("Content-Disposition"), contentDisposition[0])
-	}
+	// contentTransferEncoding := mail.GetHeaderField([]byte("Content-Transfer-Encoding"))
+	// if len(contentType) == 1 {
+	// 	signedPart.SetHeaderField([]byte("Content-Transfer-Encoding"), contentTransferEncoding[0])
+	// }
+	// contentDisposition := mail.GetHeaderField([]byte("Content-Disposition"))
+	// if len(contentType) == 1 {
+	// 	signedPart.SetHeaderField([]byte("Content-Disposition"), contentDisposition[0])
+	// }
 
 	// Sign
 	lines := mime.ParseLines(signedPart.Full())
 	signatureDER, err := smime.CMS.Sign(lines.Bytes(mime.CRLF), true)
-
+	// fmt.Println(signatureDER)
 	// Encode signature
 
 	signature := mime.MIME{}