diff --git a/docs/ref/contrib/admin/actions.txt b/docs/ref/contrib/admin/actions.txt
index 7b664f901d..904d20eb33 100644
--- a/docs/ref/contrib/admin/actions.txt
+++ b/docs/ref/contrib/admin/actions.txt
@@ -23,7 +23,20 @@ models. For example, here's the user module from Django's built-in
 :mod:`django.contrib.auth` app:
 
 .. image:: _images/user_actions.png
+
+.. warning::
+
+    The "delete selected objects" action uses :meth:`QuerySet.delete()
+    <django.db.models.QuerySet.delete>` for efficiency reasons, which has an
+    important caveat: your model's ``delete()`` method will not be called.
     
+    If you wish to override this behavior, simply write a custom action which
+    accomplishes deletion in your preferred manner -- for example, by calling
+    ``Model.delete()`` for each of the selected items.
+    
+    For more background on bulk deletion, see the documentation on :ref:`object
+    deletion <topics-db-queries-delete>`.
+
 Read on to find out how to add your own actions to this list.
 
 Writing actions