diff --git a/Doc/library/logging.rst b/Doc/library/logging.rst
index 34e98fc2577003..22412e1a2113bb 100644
--- a/Doc/library/logging.rst
+++ b/Doc/library/logging.rst
@@ -813,8 +813,9 @@ wire).
    :type lineno: int
 
    :param msg: The event description message,
-      which can be a %-format string with placeholders for variable data.
-   :type msg: str
+      which can be a %-format string with placeholders for variable data,
+      or an arbitrary object (see :ref:`arbitrary-object-messages`).
+   :type msg: typing.Any
 
    :param args: Variable data to merge into the *msg* argument
       to obtain the event description.