diff --git a/Lib/test/test_wsgiref.py b/Lib/test/test_wsgiref.py
--- a/Lib/test/test_wsgiref.py
+++ b/Lib/test/test_wsgiref.py
@@ -339,7 +339,7 @@
         self.assertEqual(Headers(test[:]).keys(), ['x'])
         self.assertEqual(Headers(test[:]).values(), ['y'])
         self.assertEqual(Headers(test[:]).items(), test)
-        self.assertFalse(Headers(test).items() is test)  # must be copy!
+        self.assertIsNot(Headers(test).items(), test)  # must be copy!
 
         h=Headers([])
         del h['foo']   # should not raise an error
@@ -621,7 +621,7 @@
 
         h = ErrorHandler()
         h.run(error_app)
-        self.assertEqual(side_effects['close_called'], True)
+        self.assertTrue(side_effects['close_called'])
 
 
 def test_main():