diff --git a/letsencrypt/cli.py b/letsencrypt/cli.py
index 5f4f8102a..6af6a45c6 100644
--- a/letsencrypt/cli.py
+++ b/letsencrypt/cli.py
@@ -50,7 +50,7 @@ logger = logging.getLogger(__name__)
 # This is the stub to include in help generated by argparse
 
 SHORT_USAGE = """
-  letsencrypt [SUBCOMMAND] [options] [domains]
+  letsencrypt [SUBCOMMAND] [options] [-d domain] [-d domain] ...
 
 The Let's Encrypt agent can obtain and install HTTPS/TLS/SSL certificates.  By
 default, it will attempt to use a webserver both for obtaining and installing