diff --git a/panel/tests/pane/test_vtk.py b/panel/tests/pane/test_vtk.py
index 53eeda73ec..6eb85ad661 100644
--- a/panel/tests/pane/test_vtk.py
+++ b/panel/tests/pane/test_vtk.py
@@ -412,4 +412,4 @@ def test_vtkvol_serialization_coherence(document, comm):
     vd_c_ds = p_c_ds._get_volume_data()
     vd_f_ds = p_f_ds._get_volume_data()
     vd_id_ds = p_id_ds._get_volume_data()
-    assert vd_id_ds == vd_c_ds == vd_f_ds
\ No newline at end of file
+    assert vd_id_ds == vd_c_ds == vd_f_ds