diff --git a/tests/series_only/to_dummy_test.py b/tests/series_only/to_dummy_test.py
index 2cf7f59c7..404ac6321 100644
--- a/tests/series_only/to_dummy_test.py
+++ b/tests/series_only/to_dummy_test.py
@@ -18,7 +18,9 @@ def test_to_dummies(constructor_eager: Any, sep: str) -> None:
 
 
 @pytest.mark.parametrize("sep", ["_", "-"])
-def test_to_dummies_drop_first(constructor_eager: Any, sep: str) -> None:
+def test_to_dummies_drop_first(request: Any, constructor_eager: Any, sep: str) -> None:
+    if "cudf" in str(constructor_eager):
+        request.applymarker(pytest.mark.xfail)
     s = nw.from_native(constructor_eager({"a": data}), eager_only=True)["a"].alias("a")
     result = s.to_dummies(drop_first=True, separator=sep)
     expected = {f"a{sep}2": [0, 1, 0], f"a{sep}3": [0, 0, 1]}