Issue #19795: Improved markup of True/False constants.
diff --git a/Doc/library/urllib2.rst b/Doc/library/urllib2.rst
index a35f175..d80a1a2 100644
--- a/Doc/library/urllib2.rst
+++ b/Doc/library/urllib2.rst
@@ -166,7 +166,7 @@
should be the request-host of the request for the page containing the image.
*unverifiable* should indicate whether the request is unverifiable, as defined
- by RFC 2965. It defaults to False. An unverifiable request is one whose URL
+ by RFC 2965. It defaults to ``False``. An unverifiable request is one whose URL
the user did not have the option to approve. For example, if the request is for
an image in an HTML document, and the user had no option to approve the
automatic fetching of the image, this should be true.