diff --git a/tests/services/order_validation_service/microsalt/test_data_validators.py b/tests/services/order_validation_service/microsalt/test_data_validators.py
index 508525c90a..55eaae7a72 100644
--- a/tests/services/order_validation_service/microsalt/test_data_validators.py
+++ b/tests/services/order_validation_service/microsalt/test_data_validators.py
@@ -66,7 +66,7 @@ def test_application_is_not_archived(
 ):
 
     # GIVEN an order with a new sample with an archived application
-    valid_order.enumerated_new_samples[0][1].application = archived_application.tag
+    valid_order.samples[0].application = archived_application.tag
     base_store.session.add(archived_application)
     base_store.commit_to_store()