diff --git a/py-polars/tests/unit/streaming/test_streaming_io.py b/py-polars/tests/unit/streaming/test_streaming_io.py
index d825030d9d50..3c1ec7fb2469 100644
--- a/py-polars/tests/unit/streaming/test_streaming_io.py
+++ b/py-polars/tests/unit/streaming/test_streaming_io.py
@@ -194,12 +194,16 @@ def test_sink_csv_batch_size_zero() -> None:
         lf.sink_csv("test.csv", batch_size=0)
 
 
-def test_sink_csv_nested_data() -> None:
+@pytest.mark.write_disk()
+def test_sink_csv_nested_data(tmp_path: Path) -> None:
+    tmp_path.mkdir(exist_ok=True)
+    path = tmp_path / "data.csv"
+
     lf = pl.LazyFrame({"list": [[1, 2, 3, 4, 5]]})
     with pytest.raises(
         pl.exceptions.ComputeError, match="CSV format does not support nested data"
     ):
-        lf.sink_csv("path")
+        lf.sink_csv(path)
 
 
 def test_scan_csv_only_header_10792(io_files_path: Path) -> None: