diff --git a/Lib/multiprocessing/process.py b/Lib/multiprocessing/process.py
index 780f2d0c27..088527a37a 100644
--- a/Lib/multiprocessing/process.py
+++ b/Lib/multiprocessing/process.py
@@ -305,7 +305,7 @@ class BaseProcess(object):
                 util._exit_function()
         except SystemExit as e:
             if not e.args:
-                exitcode = 1
+                exitcode = 0
             elif isinstance(e.args[0], int):
                 exitcode = e.args[0]
             else: