diff --git a/certbot/certbot/display/ops.py b/certbot/certbot/display/ops.py
index fa08d142b..3d4e3a6d1 100644
--- a/certbot/certbot/display/ops.py
+++ b/certbot/certbot/display/ops.py
@@ -240,25 +240,22 @@ def success_installation(domains):
     :param list domains: domain names which were enabled
 
     """
-    z_util(interfaces.IDisplay).notification(
-        "Congratulations! You have successfully enabled {0}".format(
-            _gen_https_names(domains)),
-        pause=False)
+    display_util.notify(
+        "Congratulations! You have successfully enabled HTTPS on {0}"
+        .format(_gen_https_names(domains))
+    )
 
 
-def success_renewal(domains):
+def success_renewal(unused_domains):
     """Display a box confirming the renewal of an existing certificate.
 
     :param list domains: domain names which were renewed
 
     """
-    z_util(interfaces.IDisplay).notification(
+    display_util.notify(
         "Your existing certificate has been successfully renewed, and the "
-        "new certificate has been installed.{1}{1}"
-        "The new certificate covers the following domains: {0}".format(
-            _gen_https_names(domains),
-            os.linesep),
-        pause=False)
+        "new certificate has been installed."
+    )
 
 
 def success_revocation(cert_path):
diff --git a/certbot/tests/display/ops_test.py b/certbot/tests/display/ops_test.py
index ce60a5f0b..56f6415f6 100644
--- a/certbot/tests/display/ops_test.py
+++ b/certbot/tests/display/ops_test.py
@@ -342,15 +342,16 @@ class SuccessInstallationTest(unittest.TestCase):
         from certbot.display.ops import success_installation
         success_installation(names)
 
+    @test_util.patch_get_utility("certbot.display.util.notify")
     @test_util.patch_get_utility("certbot.display.ops.z_util")
-    def test_success_installation(self, mock_util):
+    def test_success_installation(self, mock_util, mock_notify):
         mock_util().notification.return_value = None
         names = ["example.com", "abc.com"]
 
         self._call(names)
 
-        self.assertEqual(mock_util().notification.call_count, 1)
-        arg = mock_util().notification.call_args_list[0][0][0]
+        self.assertEqual(mock_notify.call_count, 1)
+        arg = mock_notify.call_args_list[0][0][0]
 
         for name in names:
             self.assertTrue(name in arg)
@@ -363,18 +364,15 @@ class SuccessRenewalTest(unittest.TestCase):
         from certbot.display.ops import success_renewal
         success_renewal(names)
 
+    @test_util.patch_get_utility("certbot.display.util.notify")
     @test_util.patch_get_utility("certbot.display.ops.z_util")
-    def test_success_renewal(self, mock_util):
+    def test_success_renewal(self, mock_util, mock_notify):
         mock_util().notification.return_value = None
         names = ["example.com", "abc.com"]
 
         self._call(names)
 
-        self.assertEqual(mock_util().notification.call_count, 1)
-        arg = mock_util().notification.call_args_list[0][0][0]
-
-        for name in names:
-            self.assertTrue(name in arg)
+        self.assertEqual(mock_notify.call_count, 1)
 
 class SuccessRevocationTest(unittest.TestCase):
     """Test the success revocation message."""