diff --git a/Lib/test/test_winconsoleio.py b/Lib/test/test_winconsoleio.py
index a78fa4d..9a61e48 100644
--- a/Lib/test/test_winconsoleio.py
+++ b/Lib/test/test_winconsoleio.py
@@ -25,14 +25,12 @@
         self.assertRaisesRegex(ValueError,
             "negative file descriptor", ConIO, -1)
 
-        fd, _ = tempfile.mkstemp()
-        try:
+        with tempfile.TemporaryFile() as tmpfile:
+            fd = tmpfile.fileno()
             # Windows 10: "Cannot open non-console file"
             # Earlier: "Cannot open console output buffer for reading"
             self.assertRaisesRegex(ValueError,
                 "Cannot open (console|non-console file)", ConIO, fd)
-        finally:
-            os.close(fd)
 
         try:
             f = ConIO(0)