diff --git a/tests/kernels/moe/parallel_utils.py b/tests/kernels/moe/parallel_utils.py
index 972ebe6512..a4ed498169 100644
--- a/tests/kernels/moe/parallel_utils.py
+++ b/tests/kernels/moe/parallel_utils.py
@@ -3,7 +3,6 @@
 """DeepEP test utilities."""
 
 import dataclasses
-import os
 import traceback
 from collections.abc import Callable
 from typing import Concatenate
@@ -14,7 +13,7 @@ from torch.multiprocessing import spawn  # pyright: ignore[reportPrivateImportUs
 from typing_extensions import ParamSpec
 
 from vllm.utils.import_utils import has_deep_ep, has_deep_ep_v2
-from vllm.utils.network_utils import get_open_port
+from vllm.utils.network_utils import get_file_store_init_method
 
 if has_deep_ep():
     from vllm.model_executor.layers.fused_moe.prepare_finalize.deepep_ht import (
@@ -105,7 +104,7 @@ def parallel_launch(
                 world_size,
                 world_size,
                 0,
-                f"tcp://{os.getenv('LOCALHOST', 'localhost')}:{get_open_port()}",
+                get_file_store_init_method(),
                 worker,
             )
             + args,