diff --git a/arkindex/project/tests/test_elastic.py b/arkindex/project/tests/test_elastic.py
index 0bbf16387efcced206e73d72e1aaac4e2de5331b..915dcac76d97285f07f32006419cd9bc16c93589 100644
--- a/arkindex/project/tests/test_elastic.py
+++ b/arkindex/project/tests/test_elastic.py
@@ -42,4 +42,4 @@ class TestESDocuments(FixtureAPITestCase):
         element = self.corpus.elements.get(name='Volume 1')
         element.metadatas.create(type=MetaType.Reference, name='ref.', value='123ABC')
         es_document = ESElement.from_model(element)
-        self.assertCountEqual(es_document.reference, ['123abc'])
+        self.assertCountEqual(es_document.references, ['123abc'])