diff --git a/tests/test_datasets/test_dataset.py b/tests/test_datasets/test_dataset.py
index 4598b8985..8c300ee59 100644
--- a/tests/test_datasets/test_dataset.py
+++ b/tests/test_datasets/test_dataset.py
@@ -565,15 +565,17 @@ def test__read_qualities(self, filename_mock, pickle_mock):
         assert pickle_mock.load.call_count == 0
         assert pickle_mock.dump.call_count == 1
 
-    def test__check_qualities(self):
-        qualities = [{"oml:name": "a", "oml:value": "0.5"}]
-        qualities = openml.datasets.dataset._check_qualities(qualities)
-        assert qualities["a"] == 0.5
-
-        qualities = [{"oml:name": "a", "oml:value": "null"}]
-        qualities = openml.datasets.dataset._check_qualities(qualities)
-        assert qualities["a"] != qualities["a"]
-
-        qualities = [{"oml:name": "a", "oml:value": None}]
-        qualities = openml.datasets.dataset._check_qualities(qualities)
-        assert qualities["a"] != qualities["a"]
+
+
+def test__check_qualities():
+    qualities = [{"oml:name": "a", "oml:value": "0.5"}]
+    qualities = openml.datasets.dataset._check_qualities(qualities)
+    assert qualities["a"] == 0.5
+
+    qualities = [{"oml:name": "a", "oml:value": "null"}]
+    qualities = openml.datasets.dataset._check_qualities(qualities)
+    assert qualities["a"] != qualities["a"]
+
+    qualities = [{"oml:name": "a", "oml:value": None}]
+    qualities = openml.datasets.dataset._check_qualities(qualities)
+    assert qualities["a"] != qualities["a"]
\ No newline at end of file