fix the description of bytes tests
diff --git a/Lib/test/test_set.py b/Lib/test/test_set.py
index bfef621..992a4ce 100644
--- a/Lib/test/test_set.py
+++ b/Lib/test/test_set.py
@@ -929,7 +929,7 @@
 
 class TestBasicOpsBytes(TestBasicOps, unittest.TestCase):
     def setUp(self):
-        self.case   = "string set"
+        self.case   = "bytes set"
         self.values = [b"a", b"b", b"c"]
         self.set    = set(self.values)
         self.dup    = set(self.values)