diff --git a/Lib/doctest.py b/Lib/doctest.py
index d4119c7b4d5..6441054dd16 100644
--- a/Lib/doctest.py
+++ b/Lib/doctest.py
@@ -85,6 +85,7 @@ def _test():
     # 8. Unittest Support
     'DocTestSuite',
     'DocFileSuite',
+    'set_unittest_reportflags',
     # 9. Debugging Support
     'script_from_examples',
     'testsource',