diff --git a/tests/e2e/online_serving/test_qwen3_omni_expansion.py b/tests/e2e/online_serving/test_qwen3_omni_expansion.py
index aa176c077..c7db2dbf8 100644
--- a/tests/e2e/online_serving/test_qwen3_omni_expansion.py
+++ b/tests/e2e/online_serving/test_qwen3_omni_expansion.py
@@ -63,8 +63,6 @@ test_params = [
             use_stage_cli=True,
             server_args=[
                 "--no-async-chunk",
-                "--stage-overrides",
-                '{"0": {"enable_prefix_caching": true}, "1": {"enable_prefix_caching": true}}',
             ],
         ),
         id="default",