diff --git a/spfmilter.py b/spfmilter.py
index c3617dfae704b0d2d7c3b4948d908c3b2d982b49..1c30033d39c1976a7b2bee3ef96104ea39470d84 100644
--- a/spfmilter.py
+++ b/spfmilter.py
@@ -1,8 +1,10 @@
 # A simple SPF milter.
 # You must install pyspf for this to work.
 
+# http://www.sendmail.org/doc/sendmail-current/libmilter/docs/installation.html
+
 # Author: Stuart D. Gathman <stuart@bmsi.com>
-# Copyright 2001 Business Management Systems, Inc.
+# Copyright 2007 Business Management Systems, Inc.
 # This code is under GPL.  See COPYING for details.
 
 import sys
@@ -13,6 +15,7 @@ import spf
 import struct
 import socket
 import syslog
+import anydbm
 from Milter.config import MilterConfigParser
 from Milter.utils import iniplist,parse_addr