diff --git a/Lib/ldap/controls/pwdpolicy.py b/Lib/ldap/controls/pwdpolicy.py
index 52027bd..0cb4260 100644
--- a/Lib/ldap/controls/pwdpolicy.py
+++ b/Lib/ldap/controls/pwdpolicy.py
@@ -5,22 +5,19 @@ ldap.controls.pwdpolicy - classes for Password Policy controls
 
 See http://www.python-ldap.org/ for project details.
 
-$Id: pwdpolicy.py,v 1.3 2014/03/12 21:16:05 stroeder Exp $
+$Id: pwdpolicy.py,v 1.4 2014/03/12 21:34:07 stroeder Exp $
 """
 
 __all__ = [
   'ExpirationWarningControl'
 ]
 
-import struct
-
 # Imports from python-ldap 2.4+
 import ldap.controls
 from ldap.controls import RequestControl,ResponseControl,ValueLessRequestControl,KNOWN_RESPONSE_CONTROLS
-from ldap.controls.simple import OctetStringInteger
 
 
-class PasswordExpiringControl(OctetStringInteger):
+class PasswordExpiringControl(ResponseControl):
   """
   Indicates time in seconds when password will expire
   """