diff --git a/tests/entrypoints/openai/test_sleep.py b/tests/entrypoints/openai/test_sleep.py
index 8bdf00bcee12..66d8d9294018 100644
--- a/tests/entrypoints/openai/test_sleep.py
+++ b/tests/entrypoints/openai/test_sleep.py
@@ -25,8 +25,9 @@ def test_sleep_mode():
                                 "VLLM_SERVER_DEV_MODE": "1",
                                 "CUDA_VISIBLE_DEVICES": "0"
                             }) as remote_server:
+
         response = requests.post(remote_server.url_for("/sleep"),
-                                 data={"level": "1"})
+                                 params={"level": "1"})
         assert response.status_code == 200
         response = requests.get(remote_server.url_for("/is_sleeping"))
         assert response.status_code == 200