Issue #19795: Mark up None as literal text.
diff --git a/Doc/library/queue.rst b/Doc/library/queue.rst
index b525705..4dd9e46 100644
--- a/Doc/library/queue.rst
+++ b/Doc/library/queue.rst
@@ -113,7 +113,7 @@
.. method:: Queue.put(item[, block[, timeout]])
Put *item* into the queue. If optional args *block* is true and *timeout* is
- None (the default), block if necessary until a free slot is available. If
+ ``None`` (the default), block if necessary until a free slot is available. If
*timeout* is a positive number, it blocks at most *timeout* seconds and raises
the :exc:`Full` exception if no free slot was available within that time.
Otherwise (*block* is false), put an item on the queue if a free slot is
@@ -132,7 +132,7 @@
.. method:: Queue.get([block[, timeout]])
Remove and return an item from the queue. If optional args *block* is true and
- *timeout* is None (the default), block if necessary until an item is available.
+ *timeout* is ``None`` (the default), block if necessary until an item is available.
If *timeout* is a positive number, it blocks at most *timeout* seconds and
raises the :exc:`Empty` exception if no item was available within that time.
Otherwise (*block* is false), return an item if one is immediately available,