diff --git a/pychubby/cli.py b/pychubby/cli.py
index cdbb303..d4c7ecf 100644
--- a/pychubby/cli.py
+++ b/pychubby/cli.py
@@ -72,7 +72,7 @@ def generate(self):
         ]
 
         operators += [
-            click.option("--{}".format(k), default=v) for k, v in self.kwargs.items()
+            click.option("--{}".format(k), default=v, show_default=True) for k, v in self.kwargs.items()
         ]
 
         def f(*args, **kwargs):