diff --git a/tests/expr_and_series/when_test.py b/tests/expr_and_series/when_test.py
index aafc35f0b..0faf59172 100644
--- a/tests/expr_and_series/when_test.py
+++ b/tests/expr_and_series/when_test.py
@@ -54,12 +54,7 @@ def test_multiple_conditions(
     assert_equal_data(result, expected)
 
 
-def test_no_arg_when_fail(
-    constructor: Constructor, request: pytest.FixtureRequest
-) -> None:
-    if ("pyspark" in str(constructor)) or "duckdb" in str(constructor):
-        request.applymarker(pytest.mark.xfail)
-
+def test_no_arg_when_fail(constructor: Constructor) -> None:
     df = nw.from_native(constructor(data))
     with pytest.raises((TypeError, ValueError)):
         df.select(nw.when().then(value=3).alias("a_when"))
diff --git a/tests/frame/unique_test.py b/tests/frame/unique_test.py
index e8a4f6123..a193ab98b 100644
--- a/tests/frame/unique_test.py
+++ b/tests/frame/unique_test.py
@@ -39,7 +39,9 @@ def test_unique(
         "last",
     }:
         context: Any = pytest.raises(ValueError, match="row order")
-    elif keep == "none" and df.implementation is nw.Implementation.PYSPARK:
+    elif (
+        keep == "none" and df.implementation is nw.Implementation.PYSPARK
+    ):  # pragma: no cover
         context = pytest.raises(
             ValueError,
             match="`LazyFrame.unique` with PySpark backend only supports `keep='any'`.",