diff --git a/tests/conftest.py b/tests/conftest.py
index c224ac513..d823bd954 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -374,7 +374,7 @@ def mock_get_service_email_template_without_placeholders(mocker):
 
 @pytest.fixture(scope='function')
 def mock_get_service_letter_template(mocker, content=None, subject=None):
-    def _create(service_id, template_id):
+    def _get(service_id, template_id, version=None):
         template = template_json(
             service_id,
             template_id,
@@ -386,7 +386,8 @@ def mock_get_service_letter_template(mocker, content=None, subject=None):
         return {'data': template}
 
     return mocker.patch(
-        'app.service_api_client.get_service_template', side_effect=_create)
+        'app.service_api_client.get_service_template', side_effect=_get
+    )
 
 
 @pytest.fixture(scope='function')