diff --git a/nyacme/__main__.py b/nyacme/__main__.py
index f7f14d0..24204a4 100644
--- a/nyacme/__main__.py
+++ b/nyacme/__main__.py
@@ -15,10 +15,11 @@ log = logging.getLogger('nyacme')
 def main() -> None:
     parser = argparse.ArgumentParser(
         prog='nyacme',
-        description='fun uacme wrapper'
+        description='fun uacme wrapper',
+        formatter_class=argparse.ArgumentDefaultsHelpFormatter
     )
-    parser.add_argument('-c', '--config', default='/etc/nyacme.toml')
-    parser.add_argument('-o', '--output', default='/etc/ssl/uacme')
+    parser.add_argument('-c', '--config', help='path to your config file', default='/etc/nyacme.toml')
+    parser.add_argument('-o', '--output', help='path to the certificate output directory', default='/etc/ssl/uacme')
     args = parser.parse_args()
 
     config = read_config(args.config)