diff --git a/Lib/test/test_os.py b/Lib/test/test_os.py
index aa414ca14889a4..1e1980e3ac47e5 100644
--- a/Lib/test/test_os.py
+++ b/Lib/test/test_os.py
@@ -726,7 +726,7 @@ def test_access_denied(self):
         # denied. See issue 28075.
         # os.environ['TEMP'] should be located on a volume that
         # supports file ACLs.
-        fname = os.path.join(os.environ['TEMP'], self.fname)
+        fname = os.path.join(os.environ['TEMP'], self.fname + "_access")
         self.addCleanup(os_helper.unlink, fname)
         create_file(fname, b'ABC')
         # Deny the right to [S]YNCHRONIZE on the file to