Issue #19795: Mark up None as literal text.
diff --git a/Doc/howto/logging.rst b/Doc/howto/logging.rst
index 82d1308..f72f09f 100644
--- a/Doc/howto/logging.rst
+++ b/Doc/howto/logging.rst
@@ -764,7 +764,7 @@
   The handler's level is set to ``WARNING``, so all events at this and
   greater severities will be output.
 
-To obtain the pre-3.2 behaviour, ``logging.lastResort`` can be set to *None*.
+To obtain the pre-3.2 behaviour, ``logging.lastResort`` can be set to ``None``.
 
 .. _library-config: