#12709: add error_callback argument to map_async documentation

diff --git a/Doc/library/multiprocessing.rst b/Doc/library/multiprocessing.rst
index 92d52729484421311a3697fbb5b07c5deb6d636c..d95b33c42fa2928696ba54737e5a52a1ca687cea 100644 (file)
--- a/Doc/library/multiprocessing.rst
+++ b/Doc/library/multiprocessing.rst
@@ -1609,7 +1609,7 @@ with the :class:`Pool` class.
       the process pool as separate tasks.  The (approximate) size of these
       chunks can be specified by setting *chunksize* to a positive integer.
 
-   .. method:: map_async(func, iterable[, chunksize[, callback]])
+   .. method:: map_async(func, iterable[, chunksize[, callback[, error_callback]]])
 
       A variant of the :meth:`.map` method which returns a result object.