diff --git a/Lib/hashlib.py b/Lib/hashlib.py
index 9108095..21454c7 100644
--- a/Lib/hashlib.py
+++ b/Lib/hashlib.py
@@ -88,7 +88,7 @@
     except ImportError:
         pass  # no extension module, this hash is unsupported.
 
-    raise ValueError('unsupported hash type %s' % name)
+    raise ValueError('unsupported hash type ' + name)
 
 
 def __get_openssl_constructor(name):
diff --git a/Lib/test/test_hashlib.py b/Lib/test/test_hashlib.py
index 97981dd..29d3a1c 100644
--- a/Lib/test/test_hashlib.py
+++ b/Lib/test/test_hashlib.py
@@ -111,12 +111,8 @@
                             issubset(hashlib.algorithms_available))
 
     def test_unknown_hash(self):
-        try:
-            hashlib.new('spam spam spam spam spam')
-        except ValueError:
-            pass
-        else:
-            self.assertTrue(0 == "hashlib didn't reject bogus hash name")
+        self.assertRaises(ValueError, hashlib.new, 'spam spam spam spam spam')
+        self.assertRaises(TypeError, hashlib.new, 1)
 
     def test_get_builtin_constructor(self):
         get_builtin_constructor = hashlib.__dict__[
@@ -135,6 +131,7 @@
                 sys.modules['_md5'] = _md5
             else:
                 del sys.modules['_md5']
+        self.assertRaises(TypeError, get_builtin_constructor, 3)
 
     def test_hexdigest(self):
         for name in self.supported_hash_names: