diff --git a/src/ifc5d/test/test_csv2ifc.py b/src/ifc5d/test/test_csv2ifc.py
index 7f6a8ebfd3..845d9f6d19 100644
--- a/src/ifc5d/test/test_csv2ifc.py
+++ b/src/ifc5d/test/test_csv2ifc.py
@@ -65,7 +65,7 @@ class TestCsv2Ifc:
         all_nested_items = [i for item in root_items for i in ifcopenshell.util.cost.get_all_nested_cost_items(item)]
         assert len(all_nested_items + root_items) == len(all_cost_items)
 
-    @pytest.mark.parametrize("csv_filepath", Path(__file__).parent.parent.glob("*.csv"))
+    @pytest.mark.parametrize("csv_filepath", tuple(Path(__file__).parent.parent.glob("*.csv")))
     def test_import_sample_files(self, csv_filepath: Path):
         ifc_file = self.setup_ifc_file()
         ifcopenshell.api.root.create_entity(ifc_file, ifc_class="IfcProject")
diff --git a/src/ifcopenshell-python/test/test_file_gc.py b/src/ifcopenshell-python/test/test_file_gc.py
index 59b5338ce9..44181a410f 100644
--- a/src/ifcopenshell-python/test/test_file_gc.py
+++ b/src/ifcopenshell-python/test/test_file_gc.py
@@ -17,7 +17,7 @@ import ifcopenshell.template
 @pytest.mark.skip(reason="Current file retention is not automatic anymore if a single instance is alive")
 @pytest.mark.parametrize(
     "args",
-    itertools.product((0, 1), (0, 1), (0, 1), (0, 1, 2)),
+    tuple(itertools.product((0, 1), (0, 1), (0, 1), (0, 1, 2))),
 )
 def test_file_gc(args):
     do_run_api, do_delete_ref, file_first, api = args
diff --git a/src/ifcopenshell-python/test/util/test_unit_conversion.py b/src/ifcopenshell-python/test/util/test_unit_conversion.py
index a3c8b702ef..62eabd56bd 100644
--- a/src/ifcopenshell-python/test/util/test_unit_conversion.py
+++ b/src/ifcopenshell-python/test/util/test_unit_conversion.py
@@ -25,7 +25,7 @@ import ifcopenshell.util.unit
 UNITS_FIXTURE_DIR = pathlib.Path(__file__).parent.parent / "fixtures" / "units"
 
 
-@pytest.mark.parametrize("ifc_file", UNITS_FIXTURE_DIR.glob("*.ifc"))
+@pytest.mark.parametrize("ifc_file", tuple(UNITS_FIXTURE_DIR.glob("*.ifc")))
 def test_file_units_length_convert(ifc_file: str):
     f = ifcopenshell.open(ifc_file)