diff --git a/examples/cli.ini b/examples/cli.ini
index a20764ed8..c8678f89c 100644
--- a/examples/cli.ini
+++ b/examples/cli.ini
@@ -11,6 +11,10 @@ server = https://acme-staging.api.letsencrypt.org/directory
 # Uncomment and update to register with the specified e-mail address
 # email = foo@example.com
 
+# Uncommon and update to generate certificates for the specified
+# domains.
+# domains = example.com, www.example.com
+
 # Uncomment to use a text interface instead of ncurses
 # text = True