diff --git a/miles/ray/actor_group.py b/miles/ray/actor_group.py
index c262ea308d..51335940a8 100644
--- a/miles/ray/actor_group.py
+++ b/miles/ray/actor_group.py
@@ -147,7 +147,7 @@ def _allocate_gpus_via_placements(self, worker_placements, num_gpus_per_actor) -
             cvd = ",".join(str(g) for g in wp.gpu_ids)
             env_vars = dict(env_vars_base)
             env_vars["CUDA_VISIBLE_DEVICES"] = cvd
-            TrainRayActor = ray.remote(num_gpus=1, runtime_env={"env_vars": env_vars})(actor_impl)
+            TrainRayActor = ray.remote(runtime_env={"env_vars": env_vars})(actor_impl)
             actor = TrainRayActor.options(
                 num_cpus=num_gpus_per_actor,
                 num_gpus=num_gpus_per_actor,