diff --git a/lib/build.js b/lib/build.js
index 79d6223c..c25afc56 100644
--- a/lib/build.js
+++ b/lib/build.js
@@ -12,12 +12,12 @@ var build = require('./build-module');
 var argv = require('yargs')
 .usage('node lib/build.js [--bs_version][--minify][--ignore][--only][--autoInitDataAPI]')
 .options({
-	bs_version: {
-		alias: 'v',
-		type: 'string',
-		default: '3',
-		describe: 'Bootstrap version'
-	},
+  bs_version: {
+    alias: 'v',
+    type: 'string',
+    default: '3',
+    describe: 'Bootstrap version'
+  },
   minify: {
     alias: 'm',
     type: 'boolean',