diff --git a/src/ZPublisher/tests/test_xmlrpc.py b/src/ZPublisher/tests/test_xmlrpc.py
index 7bad45455d..a2cd8b2bde 100644
--- a/src/ZPublisher/tests/test_xmlrpc.py
+++ b/src/ZPublisher/tests/test_xmlrpc.py
@@ -50,9 +50,9 @@ def test_setBody(self):
         as_set, method = xmlrpclib.loads(body_str)
         as_set = as_set[0]
 
-        self.assertEqual(method, None)
-        self.assertFalse('_secret' in as_set.keys())
-        self.assertTrue('public' in as_set.keys())
+        self.assertIs(method, None)
+        self.assertNotIn('_secret', as_set.keys())
+        self.assertIn('public', as_set.keys())
         self.assertEqual(as_set['public'], 'def')
 
     def test_nil(self):
@@ -61,7 +61,7 @@ def test_nil(self):
         response = self._makeOne(faux)
         response.setBody(body)
         data, method = xmlrpclib.loads(faux._body)
-        self.assertTrue(data[0]['public'] is None)
+        self.assertIs(data[0]['public'], None)
 
     def test_instance(self):
         # Instances are turned into dicts with their private