diff --git a/Lib/test/test_csv.py b/Lib/test/test_csv.py
index 66b0ea9..cdda179 100644
--- a/Lib/test/test_csv.py
+++ b/Lib/test/test_csv.py
@@ -272,13 +272,22 @@
         expected_dialects.sort()
         csv.register_dialect(name, myexceltsv)
         try:
-            self.failUnless(isinstance(csv.get_dialect(name), myexceltsv))
+            self.failUnless(csv.get_dialect(name).delimiter, '\t')
             got_dialects = csv.list_dialects()
             got_dialects.sort()
             self.assertEqual(expected_dialects, got_dialects)
         finally:
             csv.unregister_dialect(name)
 
+    def test_register_kwargs(self):
+        name = 'fedcba'
+        csv.register_dialect(name, delimiter=';')
+        try:
+            self.failUnless(csv.get_dialect(name).delimiter, '\t')
+            self.failUnless(list(csv.reader('X;Y;Z', name)), ['X', 'Y', 'Z'])
+        finally:
+            csv.unregister_dialect(name)
+
     def test_incomplete_dialect(self):
         class myexceltsv(csv.Dialect):
             delimiter = "\t"