diff --git a/Doc/library/asyncio-eventloop.rst b/Doc/library/asyncio-eventloop.rst
index 555a0f5cb2a..c1dddbf64aa 100644
--- a/Doc/library/asyncio-eventloop.rst
+++ b/Doc/library/asyncio-eventloop.rst
@@ -1206,7 +1206,13 @@ Executing code in thread or process pools
                   pool, cpu_bound)
               print('custom process pool', result)
 
-      asyncio.run(main())
+      if __name__ == '__main__':
+          asyncio.run(main())
+
+   Note that the entry point guard (``if __name__ == '__main__'``)
+   is required for option 3 due to the peculiarities of :mod:`multiprocessing`,
+   which is used by :class:`~concurrent.futures.ProcessPoolExecutor`.
+   See :ref:`Safe importing of main module <multiprocessing-safe-main-import>`.
 
    This method returns a :class:`asyncio.Future` object.
 
diff --git a/Doc/library/multiprocessing.rst b/Doc/library/multiprocessing.rst
index caf24a35fdf..74e3377b2f5 100644
--- a/Doc/library/multiprocessing.rst
+++ b/Doc/library/multiprocessing.rst
@@ -2955,6 +2955,8 @@ Global variables
     However, global variables which are just module level constants cause no
     problems.
 
+.. _multiprocessing-safe-main-import:
+
 Safe importing of main module
 
     Make sure that the main module can be safely imported by a new Python