builtin -> built-in.
diff --git a/Doc/howto/doanddont.rst b/Doc/howto/doanddont.rst
index eee5765..f795ead 100644
--- a/Doc/howto/doanddont.rst
+++ b/Doc/howto/doanddont.rst
@@ -261,7 +261,7 @@
More useful functions in :mod:`os.path`: :func:`basename`, :func:`dirname` and
:func:`splitext`.
-There are also many useful builtin functions people seem not to be aware of for
+There are also many useful built-in functions people seem not to be aware of for
some reason: :func:`min` and :func:`max` can find the minimum/maximum of any
sequence with comparable semantics, for example, yet many people write their own
:func:`max`/:func:`min`. Another highly useful function is :func:`reduce`. A