diff --git a/scripts/filters/post_lazyload.js b/scripts/filters/post_lazyload.js
index b5cb3b1..c279633 100644
--- a/scripts/filters/post_lazyload.js
+++ b/scripts/filters/post_lazyload.js
@@ -11,5 +11,6 @@ const urlFor = require('hexo-util').url_for.bind(hexo)
 hexo.extend.filter.register('after_post_render', data => {
   if (!hexo.theme.config.lazyload.enable) return
   const bg = hexo.theme.config.lazyload.post ? urlFor(hexo.theme.config.lazyload.post) : 'data:image/gif;base64,R0lGODdhAQABAPAAAMPDwwAAACwAAAAAAQABAAACAkQBADs='
-  return data.content.replace(/(<img.*? src=)/ig, `$1 "${bg}" data-lazy-src=`)
+  data.content = data.content.replace(/(<img.*? src=)/ig, `$1 "${bg}" data-lazy-src=`)
+  return data
 })