diff --git a/offlineimap/folder/__init__.py b/offlineimap/folder/__init__.py
index bae2689..3553030 100644
--- a/offlineimap/folder/__init__.py
+++ b/offlineimap/folder/__init__.py
@@ -1 +1,4 @@
+"""
+Folder Module of offlineimap
+"""
 from . import Base, Gmail, IMAP, Maildir, LocalStatus, UIDMaps