diff --git a/lib/load-config.js b/lib/load-config.js
index 19674f3..1610747 100644
--- a/lib/load-config.js
+++ b/lib/load-config.js
@@ -1,7 +1,9 @@
+'use strict';
+
 var loadConfig = require('load-config-file');
 
 // loadConfig.register('.json', JSON.parse);
-loadConfig.register(['.json', '.js'], function(ctx, opt, file){
+loadConfig.register(['.json', '.js'], function(ctx, opt, file) {
   return require(file);
 });