diff --git a/bookwyrm/book_search.py b/bookwyrm/book_search.py
index c4d03caf..91a4e67a 100644
--- a/bookwyrm/book_search.py
+++ b/bookwyrm/book_search.py
@@ -114,7 +114,7 @@ def search_title_author(query, min_confidence, *filters, return_first=False):
     editions_of_work = results.values("parent_work__id").values_list("parent_work__id")
 
     # filter out multiple editions of the same work
-    results = []
+    list_results = []
     for work_id in set(editions_of_work):
         editions = results.filter(parent_work=work_id)
         default = editions.order_by("-edition_rank").first()
@@ -126,8 +126,8 @@ def search_title_author(query, min_confidence, *filters, return_first=False):
             result = editions.first()
         if return_first:
             return result
-        results.append(result)
-    return results
+        list_results.append(result)
+    return list_results
 
 
 @dataclass
diff --git a/bookwyrm/tests/connectors/test_abstract_connector.py b/bookwyrm/tests/connectors/test_abstract_connector.py
index 129b3f0c..a453f613 100644
--- a/bookwyrm/tests/connectors/test_abstract_connector.py
+++ b/bookwyrm/tests/connectors/test_abstract_connector.py
@@ -119,12 +119,10 @@ class AbstractConnector(TestCase):
     @responses.activate
     def test_get_or_create_author(self):
         """load an author"""
-        self.connector.author_mappings = (  # pylint: disable=attribute-defined-outside-init
-            [  # pylint: disable=attribute-defined-outside-init
-                Mapping("id"),
-                Mapping("name"),
-            ]
-        )
+        self.connector.author_mappings = [  # pylint: disable=attribute-defined-outside-init  # pylint: disable=attribute-defined-outside-init
+            Mapping("id"),
+            Mapping("name"),
+        ]
 
         responses.add(
             responses.GET,
diff --git a/bookwyrm/tests/views/test_isbn.py b/bookwyrm/tests/views/test_isbn.py
index a6a45174..05a10956 100644
--- a/bookwyrm/tests/views/test_isbn.py
+++ b/bookwyrm/tests/views/test_isbn.py
@@ -35,7 +35,7 @@ class IsbnViews(TestCase):
             parent_work=self.work,
         )
         models.Connector.objects.create(
-            identifier="self", connector_file="self_connector", local=True
+            identifier="self", connector_file="self_connector"
         )
         models.SiteSettings.objects.create()
 
diff --git a/bookwyrm/views/isbn.py b/bookwyrm/views/isbn.py
index 173a3adb..e5343488 100644
--- a/bookwyrm/views/isbn.py
+++ b/bookwyrm/views/isbn.py
@@ -17,7 +17,9 @@ class Isbn(View):
         book_results = book_search.isbn_search(isbn)
 
         if is_api_request(request):
-            return JsonResponse([r.json() for r in book_results], safe=False)
+            return JsonResponse(
+                [book_search.format_search_result(r) for r in book_results], safe=False
+            )
 
         paginated = Paginator(book_results, PAGE_LENGTH).get_page(
             request.GET.get("page")