diff --git a/Lib/ldap/schema/subentry.py b/Lib/ldap/schema/subentry.py
index a80f238..b5e04c2 100644
--- a/Lib/ldap/schema/subentry.py
+++ b/Lib/ldap/schema/subentry.py
@@ -8,8 +8,6 @@
 
 from ldap.schema.models import *
 
-from UserDict import UserDict
-
 SCHEMA_CLASS_MAPPING = ldap.cidict.cidict()
 SCHEMA_ATTR_MAPPING = {}