diff --git a/bin/cli.py b/bin/cli.py
index 428f983..9de1c64 100644
--- a/bin/cli.py
+++ b/bin/cli.py
@@ -37,6 +37,8 @@ def _resolve_chat_cwd() -> Path:
 @click.option(
     "--cwd",
     "-C",
+    is_flag=False,
+    flag_value=".",
     default=None,
     type=click.Path(dir_okay=True, file_okay=False),
     help="Use specified path as working directory (default: workspace/).",