diff --git a/Doc/library/multiprocessing.rst b/Doc/library/multiprocessing.rst
index 3c7b5cc1262..492f94c3001 100644
--- a/Doc/library/multiprocessing.rst
+++ b/Doc/library/multiprocessing.rst
@@ -2279,7 +2279,7 @@ with the :class:`Pool` class.
    .. method:: successful()
 
       Return whether the call completed without raising an exception.  Will
-      raise :exc:`AssertionError` if the result is not ready.
+      raise :exc:`ValueError` if the result is not ready.
 
       .. versionchanged:: 3.7
          If the result is not ready, :exc:`ValueError` is raised instead of