diff --git a/tests/test_start_execution.py b/tests/test_start_execution.py
index 02fbb8274..85a96026d 100644
--- a/tests/test_start_execution.py
+++ b/tests/test_start_execution.py
@@ -185,7 +185,6 @@ def test_lambda_handler_500_jobs():
     with (
         patch('dynamo.jobs.get_jobs_waiting_for_execution') as mock_get_jobs_waiting_for_execution,
         patch('start_execution.submit_jobs') as mock_submit_jobs,
-        patch.dict(os.environ, {'START_EXECUTION_WORKER_ARN': 'test-worker-function-arn'}, clear=True),
         patch.dict(os.environ, {'STEP_FUNCTION_ARN': 'test-step-function-arn'}, clear=True),
     ):
         mock_jobs = list(range(500))
@@ -204,7 +203,6 @@ def test_lambda_handler_400_jobs():
     with (
         patch('dynamo.jobs.get_jobs_waiting_for_execution') as mock_get_jobs_waiting_for_execution,
         patch('start_execution.submit_jobs') as mock_submit_jobs,
-        patch.dict(os.environ, {'START_EXECUTION_WORKER_ARN': 'test-worker-function-arn'}, clear=True),
         patch.dict(os.environ, {'STEP_FUNCTION_ARN': 'test-step-function-arn'}, clear=True),
     ):
         mock_jobs = list(range(400))
@@ -223,7 +221,6 @@ def test_lambda_handler_50_jobs():
     with (
         patch('dynamo.jobs.get_jobs_waiting_for_execution') as mock_get_jobs_waiting_for_execution,
         patch('start_execution.submit_jobs') as mock_submit_jobs,
-        patch.dict(os.environ, {'START_EXECUTION_WORKER_ARN': 'test-worker-function-arn'}, clear=True),
         patch.dict(os.environ, {'STEP_FUNCTION_ARN': 'test-step-function-arn'}, clear=True),
     ):
         mock_jobs = list(range(50))
@@ -242,7 +239,6 @@ def test_lambda_handler_no_jobs():
     with (
         patch('dynamo.jobs.get_jobs_waiting_for_execution') as mock_get_jobs_waiting_for_execution,
         patch('start_execution.submit_jobs') as mock_submit_jobs,
-        patch.dict(os.environ, {'START_EXECUTION_WORKER_ARN': 'test-worker-function-arn'}, clear=True),
         patch.dict(os.environ, {'STEP_FUNCTION_ARN': 'test-step-function-arn'}, clear=True),
     ):
         mock_get_jobs_waiting_for_execution.return_value = []