diff --git a/test/test_binary.py b/test/test_binary.py
index 587bcdf91..86fc75963 100644
--- a/test/test_binary.py
+++ b/test/test_binary.py
@@ -105,11 +105,11 @@ class TestBinary(unittest.TestCase):
                          "Binary(%s, 100)" % (repr(b("test")),))
 
     def test_hash(self):
-        one = Binary(b"hello world")
-        two = Binary(b"hello world", 42)
-        self.assertEqual(hash(Binary(b"hello world")), hash(one))
+        one = Binary(b("hello world"))
+        two = Binary(b("hello world"), 42)
+        self.assertEqual(hash(Binary(b("hello world"))), hash(one))
         self.assertNotEqual(hash(one), hash(two))
-        self.assertEqual(hash(Binary(b"hello world", 42)), hash(two))
+        self.assertEqual(hash(Binary(b("hello world"), 42)), hash(two))
 
     def test_legacy_java_uuid(self):
         if not should_test_uuid: