diff --git a/src/ifcopenshell-python/test/test_create_shape.py b/src/ifcopenshell-python/test/test_create_shape.py
index 639c3b3541..e3c571f05c 100644
--- a/src/ifcopenshell-python/test/test_create_shape.py
+++ b/src/ifcopenshell-python/test/test_create_shape.py
@@ -38,6 +38,8 @@ class TestGeomSettings:
             settings.get(settings.USE_PYTHON_OPENCASCADE)
         with pytest.raises(RuntimeError):
             settings.get("use-python-opencascade")
+        with pytest.raises(RuntimeError):
+            settings.set("use-python-opencascade", True)
         assert "USE_PYTHON_OPENCASCADE" not in repr(settings)