diff --git a/Lib/test/test_unary.py b/Lib/test/test_unary.py
index 1e07c15..fa467ba 100644
--- a/Lib/test/test_unary.py
+++ b/Lib/test/test_unary.py
@@ -43,9 +43,8 @@
 
     def test_bad_types(self):
         for op in '+', '-', '~':
+            self.assertRaises(TypeError, eval, op + "b'a'")
             self.assertRaises(TypeError, eval, op + "'a'")
-            if have_unicode:
-                self.assertRaises(TypeError, eval, op + "u'a'")
 
         self.assertRaises(TypeError, eval, "~2j")
         self.assertRaises(TypeError, eval, "~2.0")