diff --git a/accountant/fields.py b/accountant/fields.py
index 7ab4478..e19b6fc 100644
--- a/accountant/fields.py
+++ b/accountant/fields.py
@@ -1,3 +1,4 @@
+# vim: set tw=80 ts=4 sw=4 sts=4:
 """
     This file is part of Accountant.