diff --git a/app/views/layouts/application.html.haml b/app/views/layouts/application.html.haml
index b47112247dc0433837750e5a2bccc02cf303b116..747d80bf025bb8097a3881dd0e935f89de7171cf 100755
--- a/app/views/layouts/application.html.haml
+++ b/app/views/layouts/application.html.haml
@@ -19,8 +19,7 @@
     %meta{ name: 'apple-mobile-web-app-capable', content: 'yes' }/
 
     %title= content_for?(:page_title) ? safe_join([yield(:page_title).chomp.html_safe, title], ' - ') : title
-    %script{:src => "https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.4/MathJax.js?config=TeX-MML-AM_CHTML"}
-    
+
     = stylesheet_pack_tag 'common', media: 'all'
     = stylesheet_pack_tag current_theme, media: 'all'
     = javascript_pack_tag 'common', integrity: true, crossorigin: 'anonymous'