diff --git a/index.js b/index.js
index ca52d28..ed75479 100644
--- a/index.js
+++ b/index.js
@@ -4,7 +4,7 @@
 const { extname } = require('path');
 
 const config = hexo.config.feed = Object.assign({
-  type: 'atom',
+  type: ['atom'],
   limit: 20,
   hub: '',
   content: true,
@@ -59,7 +59,7 @@ for (const feedType of type) {
   });
 }
 
-if (typeof config.autodiscovery === 'undefined') config.autodiscovery = true;
+if (typeof config.autodiscovery !== 'boolean') config.autodiscovery = true;
 
 if (config.autodiscovery === true) {
   hexo.extend.filter.register('after_render:html', require('./lib/autodiscovery'));