diff --git a/Lib/test/test_memoryio.py b/Lib/test/test_memoryio.py
index d94d9dd..0d044e9 100644
--- a/Lib/test/test_memoryio.py
+++ b/Lib/test/test_memoryio.py
@@ -459,9 +459,9 @@
 
         # These are just dummy values but we nevertheless check them for fear
         # of unexpected breakage.
-        self.assertTrue(memio.encoding is None)
-        self.assertEqual(memio.errors, "strict")
-        self.assertEqual(memio.line_buffering, False)
+        self.assertIsNone(memio.encoding)
+        self.assertIsNone(memio.errors)
+        self.assertFalse(memio.line_buffering)
 
     def test_newline_none(self):
         # newline=None