diff --git a/letsencrypt/client/tests/apache/dvsni_test.py b/letsencrypt/client/tests/apache/dvsni_test.py
index 6beb07b37..d2622a925 100644
--- a/letsencrypt/client/tests/apache/dvsni_test.py
+++ b/letsencrypt/client/tests/apache/dvsni_test.py
@@ -59,7 +59,7 @@ class DvsniPerformTest(unittest.TestCase):
 
     def test_perform0(self):
         resp = self.sni.perform()
-        self.assertIs(resp, None)
+        self.assertTrue(resp is None)
 
     @mock.patch("letsencrypt.client.apache.configurator."
                 "ApacheConfigurator.restart")
diff --git a/letsencrypt/client/tests/recovery_token_test.py b/letsencrypt/client/tests/recovery_token_test.py
index 945c2b0b9..d3d82e8ad 100644
--- a/letsencrypt/client/tests/recovery_token_test.py
+++ b/letsencrypt/client/tests/recovery_token_test.py
@@ -57,7 +57,7 @@ class RecoveryTokenTest(unittest.TestCase):
         self.assertEqual(response, {"type": "recoveryToken", "token": "555"})
 
         response = self.rec_token.perform(RecTokenChall("example6.com"))
-        self.assertIs(response, None)
+        self.assertTrue(response is None)
 
 
 if __name__ == '__main__':