diff --git a/Doc/howto/functional.rst b/Doc/howto/functional.rst
index 39a1e05..b0739c7 100644
--- a/Doc/howto/functional.rst
+++ b/Doc/howto/functional.rst
@@ -13,8 +13,8 @@
 In this document, we'll take a tour of Python's features suitable for
 implementing programs in a functional style.  After an introduction to the
 concepts of functional programming, we'll look at language features such as
-iterators and generators and relevant library modules such as :mod:`itertools`
-and :mod:`functools`.
+iterators and :term:`generator`\s and relevant library modules such as
+:mod:`itertools` and :mod:`functools`.
 
 
 Introduction