diff --git a/Doc/library/collections.rst b/Doc/library/collections.rst
index cbc9c6b..d138d23 100644
--- a/Doc/library/collections.rst
+++ b/Doc/library/collections.rst
@@ -579,8 +579,8 @@
 customize a prototype instance::
 
     >>> Account = namedtuple('Account', 'owner balance transaction_count')
-    >>> model_account = Account('<owner name>', 0.0, 0)
-    >>> johns_account = model_account._replace(owner='John')
+    >>> default_account = Account('<owner name>', 0.0, 0)
+    >>> johns_account = default_account._replace(owner='John')
 
 .. rubric:: Footnotes