diff --git a/letsencrypt/plugins/common_test.py b/letsencrypt/plugins/common_test.py
index 6de86f2b8..c81d3939f 100644
--- a/letsencrypt/plugins/common_test.py
+++ b/letsencrypt/plugins/common_test.py
@@ -140,6 +140,11 @@ class DvsniTest(unittest.TestCase):
         from letsencrypt.plugins.common import Dvsni
         self.sni = Dvsni(configurator=mock.MagicMock())
 
+    def test_add_chall(self):
+        self.sni.add_chall(self.achalls[0], 0)
+        self.assertEqual(1, len(self.sni.achalls))
+        self.assertEqual([0], self.sni.indices)
+
     def test_setup_challenge_cert(self):
         # This is a helper function that can be used for handling
         # open context managers more elegantly. It avoids dealing with
diff --git a/letsencrypt_nginx/tests/dvsni_test.py b/letsencrypt_nginx/tests/dvsni_test.py
index 5b46e8da6..4680c5c1e 100644
--- a/letsencrypt_nginx/tests/dvsni_test.py
+++ b/letsencrypt_nginx/tests/dvsni_test.py
@@ -61,11 +61,6 @@ class DvsniPerformTest(util.NginxTest):
         shutil.rmtree(self.config_dir)
         shutil.rmtree(self.work_dir)
 
-    def test_add_chall(self):
-        self.sni.add_chall(self.achalls[0], 0)
-        self.assertEqual(1, len(self.sni.achalls))
-        self.assertEqual([0], self.sni.indices)
-
     @mock.patch("letsencrypt_nginx.configurator"
                 ".NginxConfigurator.choose_vhost")
     def test_perform(self, mock_choose):