diff --git a/libs/highlight.js b/libs/highlight.js
index e6feca5..d3d4240 100644
--- a/libs/highlight.js
+++ b/libs/highlight.js
@@ -2,5 +2,7 @@ const { highlight } = require('syzoj-renderer');
 const objectHash = require('object-hash');
 
 module.exports = async (code, lang, cb) => {
-  highlight(code, lang, syzoj.redisCache).then(cb);
+  highlight(code, lang, syzoj.redisCache, {
+    wrapper: null
+  }).then(cb);
 }