diff --git a/experiments/bs-roformer-vocal-separation/app.py b/experiments/bs-roformer-vocal-separation/app.py
index ba9ff76..067032f 100644
--- a/experiments/bs-roformer-vocal-separation/app.py
+++ b/experiments/bs-roformer-vocal-separation/app.py
@@ -71,7 +71,7 @@ def _run_separator(input_path: Path, output_dir: Path, mode: dict) -> None:
         "--use_autocast",
     ]
     if mode["engine"] == "mdxc":
-        args.extend(["--use_soundfile", "--mdxc_segment_size", "256", "--mdxc_overlap", "8", "--mdxc_batch_size", "1"])
+        args.extend(["--mdxc_segment_size", "256", "--mdxc_overlap", "8", "--mdxc_batch_size", "1"])
     else:
         args.extend(["--demucs_segment_size", "40", "--demucs_shifts", "2", "--demucs_overlap", "0.25"])
     completed = subprocess.run(args, capture_output=True, text=True, timeout=7200)