diff --git a/tests/e2e_test/utils.py b/tests/e2e_test/utils.py
index 6cc2372f..c422e2a1 100644
--- a/tests/e2e_test/utils.py
+++ b/tests/e2e_test/utils.py
@@ -61,7 +61,6 @@ def generate_launch_command(result_filename: str = "",
     return command
 
 def generate_serve_command(result_filename: str = "",
-                           launch_ray_cluster: bool = True,
                            ip: str = "127.0.0.1",
                            port: int = 37000,
                            dispatch_policy: str = "load",
@@ -78,7 +77,6 @@ def generate_serve_command(result_filename: str = "",
         f"nohup python -u -m llumnix.entrypoints.vllm.serve "
         f"--host {ip} "
         f"--port {port} "
-        f"{'--launch-ray-cluster ' if launch_ray_cluster else ''}"
         f"{'--log-filename manager ' if log_instance_info else ''}"
         f"{'--log-instance-info ' if log_instance_info else ''}"
         f"--enable-migration "