Index: ref/models/querysets.txt
===================================================================
--- ref/models/querysets.txt	(revision 11778)
+++ ref/models/querysets.txt	(working copy)
@@ -1295,8 +1295,12 @@
 
         values = Blog.objects.filter(
                 name__contains='Cheddar').values_list('pk', flat=True)
-        entries = Entry.objects.filter(blog__in=values)
+        entries = Entry.objects.filter(blog__in=list(values))
 
+    Note the ``list()`` call around the Blog ``QuerySet`` to force execution of
+    the first query. Without it, a nested query would be executed since 
+    :ref:`querysets-are-lazy`.
+
 gt
 ~~