diff --git a/easywks/types.py b/easywks/types.py
index bffdaf9..5bee98d 100644
--- a/easywks/types.py
+++ b/easywks/types.py
@@ -217,9 +217,8 @@ Encrypt live everybody is.
         encrypted: PGPMessage = self.key.encrypt(to_encrypt)
         encrypted |= pgp_sign(self.domain, encrypted)
         payload = MIMEApplication(str(encrypted), _subtype='octet-stream')
-        mpenc = MIMEApplication(payload.as_string(policy=default), _subtype='pgp-encrypted')
-        mpenc['Version'] = '1'
-        email = MIMEMultipart(_subtype='encrypted', _subparts=[mpenc], policy=default,
+        mpenc = MIMEApplication('Version: 1\r\n', _subtype='pgp-encrypted')
+        email = MIMEMultipart(_subtype='encrypted', _subparts=[mpenc, payload], policy=default,
                               protocol='application/pgp-encrypted')
         email['Subject'] = 'Your key has been published'
         email['To'] = self.submitter_address