diff --git a/lsp-server/test/test_cli_startup.py b/lsp-server/test/test_cli_startup.py
index e7163cf..7fe980e 100644
--- a/lsp-server/test/test_cli_startup.py
+++ b/lsp-server/test/test_cli_startup.py
@@ -42,7 +42,7 @@ class CliStartupTest(unittest.TestCase):
 
     def test_default_logger_never_writes_stdout(self) -> None:
         result = run_server()
-        self.assertEqual(0, result.returncode)
+        self.assertEqual(1, result.returncode)
         self.assertEqual(b"", result.stdout)
         self.assertIn(b"TSL-LSP server starting", result.stderr)