diff --git a/tests/test_notification.py b/tests/test_notification.py
index a262f415e..513ac8d78 100644
--- a/tests/test_notification.py
+++ b/tests/test_notification.py
@@ -160,6 +160,10 @@ def test_markup(self, portals, dbus_con, app_id):
                 'test <a href="https://example.com"><b>Some link</b></a>',
                 'test <a href="https://example.com"><b>Some link</b></a>',
             ),
+            (
+                "&lt;html&gt;",
+                "&lt;html&gt;",
+            ),
             (
                 '<a href="https://xkcd.com/327/#&quot;&gt;&lt;html&gt;"></a>',
                 '<a href="https://xkcd.com/327/#&quot;&gt;&lt;html&gt;"></a>',