diff --git a/src/py/flwr/driver/driver_client_proxy_test.py b/src/py/flwr/driver/driver_client_proxy_test.py
index dd0317d6f5aa..9900885b02cb 100644
--- a/src/py/flwr/driver/driver_client_proxy_test.py
+++ b/src/py/flwr/driver/driver_client_proxy_test.py
@@ -161,7 +161,6 @@ def test_evaluate(self) -> None:
             task_res_list=[
                 task_pb2.TaskRes(
                     task_id="554bd3c8-8474-4b93-a7db-c7bec1bf0012",
-                    workload_id=0,
                     group_id="1",
                     run_id=0,
                     task=task_pb2.Task(