diff --git a/browser/lib/markdown.js b/browser/lib/markdown.js
index 22f581e4..5c887b3d 100644
--- a/browser/lib/markdown.js
+++ b/browser/lib/markdown.js
@@ -4,10 +4,9 @@ import emoji from 'markdown-it-emoji'
 import math from '@rokt33r/markdown-it-math'
 import _ from 'lodash'
 import ConfigManager from 'browser/main/lib/ConfigManager'
+import katex from 'katex'
 import {lastFindInArray} from './utils'
 
-// FIXME We should not depend on global variable.
-const katex = window.katex
 const config = ConfigManager.get()
 
 function createGutter (str, firstLineNumber) {
diff --git a/lib/main.html b/lib/main.html
index 8852bd9e..dbb61b75 100644
--- a/lib/main.html
+++ b/lib/main.html
@@ -97,7 +97,6 @@
   </script>
 
   <script src="../node_modules/js-sequence-diagrams/fucknpm/sequence-diagram-min.js"></script>
-  <script src="../node_modules/katex/dist/katex.min.js"></script>
   <script src="../node_modules/react/dist/react.min.js"></script>
   <script src="../node_modules/react-dom/dist/react-dom.min.js"></script>
   <script src="../node_modules/redux/dist/redux.min.js"></script>