diff --git a/mail_drop_target/models/mail_thread.py b/mail_drop_target/models/mail_thread.py
index 6a652eab..392c3dd4 100644
--- a/mail_drop_target/models/mail_thread.py
+++ b/mail_drop_target/models/mail_thread.py
@@ -1,7 +1,6 @@
 # -*- coding: utf-8 -*-
-# © 2018 Therp BV <https://therp.nl>
+# Copyright 2018 Therp BV <https://therp.nl>
 # License AGPL-3.0 or later (https://www.gnu.org/licenses/agpl.html).
-from StringIO import StringIO
 from base64 import b64decode
 try:
     from ExtractMsg import Message
@@ -23,7 +22,7 @@ class MailThread(models.AbstractModel):
             raise exceptions.UserError(
                 _('Install the msg-extractor library to handle .msg files')
             )
-        message_msg = Message(StringIO(b64decode(message)))
+        message_msg = Message(b64decode(message))
         message_email = self.env['ir.mail_server'].build_email(
             message_msg.sender, message_msg.to.split(','), message_msg.subject,
             # prefer html bodies to text