diff --git a/backend/tests/routers/test_contracts.py b/backend/tests/routers/test_contracts.py
index 9f57a50..c51d67a 100644
--- a/backend/tests/routers/test_contracts.py
+++ b/backend/tests/routers/test_contracts.py
@@ -176,7 +176,8 @@ class TestContracts:
             return_value=True
         )
         mocker.patch(
-            'src.contracts.generate_contract.generate_html_contract'
+            'src.contracts.generate_contract.generate_html_contract',
+            return_value=None
         )
 
         response = client.post('/api/contracts', json=contract_body)