diff --git a/test/integration_test.py b/test/integration_test.py
index c849abc25..b1b25a089 100644
--- a/test/integration_test.py
+++ b/test/integration_test.py
@@ -1518,7 +1518,8 @@ def _test_managed_access_manifest(self,
         """
         endpoint = config.service_endpoint
 
-        special_fields = self.metadata_plugin(catalog).special_fields
+        metadata_plugin = self.metadata_plugin(catalog)
+        special_fields = metadata_plugin.special_fields
 
         def bundle_uuids(hit: JSON) -> set[str]:
             return {
@@ -1546,7 +1547,7 @@ def bundle_uuids(hit: JSON) -> set[str]:
         params = {'catalog': catalog, 'filters': json.dumps(filters)}
         manifest_url = furl(url=endpoint, path='/manifest/files', args=params)
 
-        def assert_manifest(expected_bundles):
+        def test_compact_manifest(expected_bundles):
             manifest = BytesIO(self._get_url_content(PUT, manifest_url))
             manifest_rows = self._read_csv_manifest(manifest)
             all_found_bundles = set()
@@ -1562,15 +1563,16 @@ def assert_manifest(expected_bundles):
                 all_found_bundles.update(found_bundles)
             self.assertEqual(expected_bundles, all_found_bundles)
 
+        all_bundles = {public_bundle, *managed_access_bundles}
         # With authorized credentials, all bundles included in the filters
         # should be represented in the manifest
         with self._service_account_credentials:
-            assert_manifest({public_bundle, *managed_access_bundles})
+            test_compact_manifest(all_bundles)
 
         # Without credentials, only the public bundle should be represented
-        assert_manifest({public_bundle})
+        test_compact_manifest({public_bundle})
 
-        if ManifestFormat.curl in self.metadata_plugin(catalog).manifest_formats:
+        if ManifestFormat.curl in metadata_plugin.manifest_formats:
             # Create a single-file curl manifest and verify that the OAuth2
             # token is present on the command line
             managed_access_file_id = one(self.random.choice(files)['files'])['uuid']