diff --git a/lib/index.js b/lib/index.js
index 31c7edb..a8dc06e 100644
--- a/lib/index.js
+++ b/lib/index.js
@@ -9,8 +9,8 @@ var fs = require('fs')
 fs.readdirSync(__dirname).forEach(function (file) {
   file = file.replace('.js', '');
   if (file !== 'index') {
-    exts.push(name);
-    defineLazyProperty(batteries, name, function() { return require('./' + name); });
+    exts.push(file);
+    defineLazyProperty(batteries, file, function() { return require('./' + file); });
   }
 });