diff --git a/lib/plugins/filter/new_post_path.js b/lib/plugins/filter/new_post_path.js
index 4773c0cca1..e47586fda0 100644
--- a/lib/plugins/filter/new_post_path.js
+++ b/lib/plugins/filter/new_post_path.js
@@ -2,7 +2,6 @@
 
 const { join, extname } = require('path');
 const moment = require('moment');
-const defaults = require('lodash/defaults');
 const Promise = require('bluebird');
 const { Permalink } = require('hexo-util');
 const fs = require('hexo-fs');
@@ -74,7 +73,8 @@ function newPostPathFilter(data = {}, replace) {
         }
 
         target = join(postDir, permalink.stringify(
-          defaults(filenameData, permalinkDefaults)));
+          Object.assign(permalinkDefaults, filenameData)
+        ));
       }
     }
   } else {