diff --git a/Lib/test/support/__init__.py b/Lib/test/support/__init__.py
index f4d80b4998c..97828afa5a3 100644
--- a/Lib/test/support/__init__.py
+++ b/Lib/test/support/__init__.py
@@ -363,7 +363,7 @@ def _rmtree_inner(path):
                 else:
                     _force_run(path, os.unlink, fullname)
         _waitfor(_rmtree_inner, path, waitall=True)
-        _waitfor(os.rmdir, path)
+        _waitfor(lambda p: _force_run(p, os.rmdir, p), path)
 else:
     _unlink = os.unlink
     _rmdir = os.rmdir