diff --git a/public/js/extra.js b/public/js/extra.js
index e133a810..4c4e66d6 100644
--- a/public/js/extra.js
+++ b/public/js/extra.js
@@ -826,7 +826,7 @@ md.use(require('markdown-it-mark'));
 md.use(require('markdown-it-ins'));
 md.use(require('markdown-it-sub'));
 md.use(require('markdown-it-sup'));
-md.use(require('markdown-it-mathjax'));
+md.use(require('../vendor/markdown-it-mathjax'));
 md.use(require('markdown-it-imsize'));
 
 function renderContainer(tokens, idx, options, env, self) {
diff --git a/public/js/index.js b/public/js/index.js
index 2d3c2965..ae823c42 100644
--- a/public/js/index.js
+++ b/public/js/index.js
@@ -7,19 +7,6 @@ require('bootstrap/dist/css/bootstrap.css');
 require('prismjs/themes/prism.css');
 require('highlight.js/styles/github-gist.css');
 
-require('markdown-it');
-require('markdown-it-abbr');
-require('markdown-it-footnote');
-require('markdown-it-deflist');
-require('markdown-it-mark');
-require('markdown-it-ins');
-require('markdown-it-sub');
-require('markdown-it-sup');
-require('markdown-it-container');
-require('markdown-it-mathjax');
-require('markdown-it-regexp');
-require('markdown-it-imsize');
-
 /* other vendors plugin */
 require('gist-embed');
 require('string');
diff --git a/public/js/public.js b/public/js/public.js
index 69999de9..1a1e5426 100644
--- a/public/js/public.js
+++ b/public/js/public.js
@@ -14,19 +14,6 @@ require('bootstrap/dist/css/bootstrap.css');
 require('prismjs/themes/prism.css');
 require('highlight.js/styles/github-gist.css');
 
-require('markdown-it');
-require('markdown-it-abbr');
-require('markdown-it-footnote');
-require('markdown-it-deflist');
-require('markdown-it-mark');
-require('markdown-it-ins');
-require('markdown-it-sub');
-require('markdown-it-sup');
-require('markdown-it-container');
-require('markdown-it-mathjax');
-require('markdown-it-regexp');
-require('markdown-it-imsize');
-
 /* other vendors plugin */
 require('gist-embed');
 require('string');