diff --git a/lib/cmd.js b/lib/cmd.js
index ab76482a3..8f350b72f 100644
--- a/lib/cmd.js
+++ b/lib/cmd.js
@@ -109,7 +109,7 @@ class Cmd {
   blockchain() {
     program
       .command('blockchain [environment]')
-      .option('-c, --client [client]', 'Use a specific ethereum client or simulator (supported: geth, testrpc')
+      .option('-c, --client [client]', 'Use a specific ethereum client or simulator (supported: geth, testrpc)')
       .description('run blockchain server (default: development)')
       .action(function (env, options) {
         embark.initConfig(env || 'development', {