diff --git a/bookwyrm/tests/templatetags/test_utilities.py b/bookwyrm/tests/templatetags/test_utilities.py
index 7738a51d9..c9e1c744f 100644
--- a/bookwyrm/tests/templatetags/test_utilities.py
+++ b/bookwyrm/tests/templatetags/test_utilities.py
@@ -14,6 +14,7 @@ from bookwyrm.templatetags import utilities
 class UtilitiesTags(TestCase):
     """lotta different things here"""
 
+    # pylint: disable=invalid-name
     def setUp(self):
         """create some filler objects"""
         with patch("bookwyrm.suggested_users.rerank_suggestions_task.delay"), patch(
@@ -34,6 +35,7 @@ class UtilitiesTags(TestCase):
                 remote_id="http://example.com/rat",
                 local=False,
             )
+        self.author = models.Author.objects.create(name="Jessica", isni="4")
         self.book = models.Edition.objects.create(title="Test Book")
 
     def test_get_uuid(self, *_):
@@ -77,3 +79,11 @@ class UtilitiesTags(TestCase):
         value = ValueMock("home/one/two/three/four")
         self.assertEqual(utilities.truncatepath(value, 2), "home/…ur")
         self.assertEqual(utilities.truncatepath(value, "a"), "four")
+
+    def test_get_isni_bio(self, *_):
+        """get ISNI bio"""
+        DataMock = namedtuple("Data", ("bio", "isni"))
+        data = [DataMock(r"One\Dtwo", "4"), DataMock("Not used", "4")]
+
+        result = utilities.get_isni_bio(data, self.author)
+        self.assertEqual(result, "Author of <em>One\\Dtwo</em>")