diff --git a/offlineimap/folder/IMAP.py b/offlineimap/folder/IMAP.py
index 7801aa8..0e4ae53 100644
--- a/offlineimap/folder/IMAP.py
+++ b/offlineimap/folder/IMAP.py
@@ -18,10 +18,9 @@
 import random
 import binascii
 import re
-import os
 import time
-import six
 from sys import exc_info
+import six
 
 from .Base import BaseFolder
 from offlineimap import imaputil, imaplibutil, emailutil, OfflineImapError