diff --git a/tools/tests/test_progress.py b/tools/tests/test_progress.py
index c7f305b811..1c8e33b4d7 100644
--- a/tools/tests/test_progress.py
+++ b/tools/tests/test_progress.py
@@ -597,12 +597,13 @@ class ProgressTests(unittest.TestCase):
                     self.assertIn(str(path), stderr.getvalue())
 
     def test_output_directory_that_cannot_be_written_is_named(self):
+        libraries, shaders = self.library_snapshot()
         with tempfile.TemporaryDirectory() as directory:
             blocked = Path(directory) / "blocked output"
             blocked.write_text("a file, not a directory", encoding="utf-8")
             stderr = io.StringIO()
             with patch("sys.stderr", stderr), self.assertRaises(SystemExit) as raised:
-                progress.main([str(blocked)])
+                self.run_main([str(blocked)], libraries, shaders)
             self.assertEqual(raised.exception.code, 2)
             self.assertIn(str(blocked), stderr.getvalue())
             self.assertNotIn("Traceback", stderr.getvalue())