diff --git a/Doc/library/multiprocessing.rst b/Doc/library/multiprocessing.rst
index cbc98b256a93a4..b297001f2b544e 100644
--- a/Doc/library/multiprocessing.rst
+++ b/Doc/library/multiprocessing.rst
@@ -890,7 +890,7 @@ For an example of the usage of queues for interprocess communication see
 :ref:`multiprocessing-examples`.
 
 
-.. function:: Pipe([duplex])
+.. function:: Pipe(duplex=True)
 
    Returns a pair ``(conn1, conn2)`` of
    :class:`~multiprocessing.connection.Connection` objects representing the