Issue #19795: Improved markup of True/False constants.
diff --git a/Doc/library/email.message.rst b/Doc/library/email.message.rst
index 576531d..3075e86 100644
--- a/Doc/library/email.message.rst
+++ b/Doc/library/email.message.rst
@@ -75,7 +75,7 @@
Return ``True`` if the message's payload is a list of sub-\
:class:`Message` objects, otherwise return ``False``. When
- :meth:`is_multipart` returns False, the payload should be a string object.
+ :meth:`is_multipart` returns ``False``, the payload should be a string object.
.. method:: set_unixfrom(unixfrom)