diff --git a/worker_voucher/tests/test_create_worker.py b/worker_voucher/tests/test_create_worker.py
index 2cc0d78..d08acb4 100644
--- a/worker_voucher/tests/test_create_worker.py
+++ b/worker_voucher/tests/test_create_worker.py
@@ -106,7 +106,7 @@ def test_create_worker_false_not_existing_economic_unit(self):
         mutation_log = MutationLog.objects.get(client_mutation_id=mutation_id)
         self.assertTrue(mutation_log.error)
         workers = Insuree.objects.filter(chf_id=national_id)
-        self.assertEquals(workers, None)
+        self.assertEquals(workers.count(), 0)
 
     def test_create_worker_already_assigned_to_economic_unit(self):
         InsureeConfig.reset_validation_settings()