diff --git a/django/contrib/admin/options.py b/django/contrib/admin/options.py
index f27ed3b653..29abf7a723 100644
--- a/django/contrib/admin/options.py
+++ b/django/contrib/admin/options.py
@@ -1,6 +1,6 @@
 import copy
 import operator
-from functools import update_wrapper, partial
+from functools import partial, reduce, update_wrapper
 
 from django import forms
 from django.conf import settings