diff --git a/index.js b/index.js
index 3e9817d..07245ae 100755
--- a/index.js
+++ b/index.js
@@ -7,7 +7,7 @@ var TimeFormat = require('hh-mm-ss')
 var numCPUs = require('os').cpus().length
 var argv = require('yargs')
     .usage('Usage: $0 <command> [options]')
-    .example('$0 -checksum -i B00B5', 'get a wallet where address matches B00B5 in checksum format')
+    .example('$0 --checksum -i B00B5', 'get a wallet where address matches B00B5 in checksum format')
     .example('$0 --contract -i ABC', 'get a wallet where 0 nonce contract address matches the vanity')
     .example('$0 -n 25 -i ABC', 'get 25 vanity wallets')
     .example('$0 -n 1000', 'get 1000 random wallets')