diff --git a/docs/ref/contrib/admin/index.txt b/docs/ref/contrib/admin/index.txt
index 1f4e5eafbb..d15b44d083 100644
--- a/docs/ref/contrib/admin/index.txt
+++ b/docs/ref/contrib/admin/index.txt
@@ -2658,6 +2658,7 @@ It is possible to use an inline with generically related objects. Let's say
 you have the following models::
 
     from django.contrib.contenttypes.fields import GenericForeignKey
+    from django.contrib.contenttypes.models import ContentType
     from django.db import models