diff --git a/rorapi/tests/tests_unit/tests_views_v2.py b/rorapi/tests/tests_unit/tests_views_v2.py
index 41698bc..5e24a3e 100644
--- a/rorapi/tests/tests_unit/tests_views_v2.py
+++ b/rorapi/tests/tests_unit/tests_views_v2.py
@@ -51,7 +51,7 @@ def test_search_organizations_with_affiliations_match(self, search_mock):
                     {
                         "value": "Sorbonne University",
                         "types": ["ror_display", "label"],
-                        "lang": null
+                        "lang": "fr"
                     }
                 ],
                 "affiliation_match": {