diff --git a/letsencrypt/tests/configuration_test.py b/letsencrypt/tests/configuration_test.py
index 24a84d888..acf9273d0 100644
--- a/letsencrypt/tests/configuration_test.py
+++ b/letsencrypt/tests/configuration_test.py
@@ -12,7 +12,7 @@ class NamespaceConfigTest(unittest.TestCase):
         self.namespace = mock.MagicMock(
             config_dir='/tmp/config', work_dir='/tmp/foo', foo='bar',
             server='https://acme-server.org:443/new',
-            dvsni_port='1234', simple_http_port='4321')
+            dvsni_port='1234', simple_http_port=4321)
         from letsencrypt.configuration import NamespaceConfig
         self.config = NamespaceConfig(self.namespace)
 
@@ -47,6 +47,16 @@ class NamespaceConfigTest(unittest.TestCase):
         self.assertEqual(self.config.key_dir, '/tmp/config/keys')
         self.assertEqual(self.config.temp_checkpoint_dir, '/tmp/foo/t')
 
+    def test_simple_http_port(self):
+        self.assertEqual(4321, self.config.simple_http_port)
+
+        self.namespace.simple_http_port = None
+        self.namespace.no_simple_http_tls = True
+        self.assertEqual(80, self.config.simple_http_port)
+
+        self.namespace.no_simple_http_tls = False
+        self.assertEqual(443, self.config.simple_http_port)
+
 
 class RenewerConfigurationTest(unittest.TestCase):
     """Test for letsencrypt.configuration.RenewerConfiguration."""