diff --git a/swh/web/assets/src/bundles/webapp/readme-rendering.js b/swh/web/assets/src/bundles/webapp/readme-rendering.js
index c167c70d..69870545 100644
--- a/swh/web/assets/src/bundles/webapp/readme-rendering.js
+++ b/swh/web/assets/src/bundles/webapp/readme-rendering.js
@@ -1,123 +1,123 @@
 /**
  * Copyright (C) 2018-2019  The Software Heritage developers
  * See the AUTHORS file at the top-level directory of this distribution
  * License: GNU Affero General Public License version 3, or any later version
  * See top-level LICENSE file for more information
  */
 
 import {handleFetchError} from 'utils/functions';
 
 import {decode} from 'html-encoder-decoder';
 
 export async function renderMarkdown(domElt, markdownDocUrl) {
 
   let showdown = await import(/* webpackChunkName: "showdown" */ 'utils/showdown');
   await import(/* webpackChunkName: "highlightjs" */ 'utils/highlightjs');
 
   // Adapted from https://github.com/Bloggify/showdown-highlight
   // Copyright (c) 2016-19 Bloggify <support@bloggify.org> (https://bloggify.org)
   function showdownHighlight() {
     return [{
       type: 'output',
       filter: function(text, converter, options) {
         let left = '<pre><code\\b[^>]*>';
         let right = '</code></pre>';
         let flags = 'g';
         let classAttr = 'class="';
         let replacement = (wholeMatch, match, left, right) => {
           match = decode(match);
           let lang = (left.match(/class="([^ "]+)/) || [])[1];
 
           if (left.includes(classAttr)) {
             let attrIndex = left.indexOf(classAttr) + classAttr.length;
             left = left.slice(0, attrIndex) + 'hljs ' + left.slice(attrIndex);
           } else {
             left = left.slice(0, -1) + ' class="hljs">';
           }
 
           if (lang && hljs.getLanguage(lang)) {
             return left + hljs.highlight(lang, match).value + right;
           } else {
-            return left + hljs.highlightAuto(match).value + right;
+            return left + match + right;
           }
         };
 
         return showdown.helper.replaceRecursiveRegExp(text, replacement, left, right, flags);
       }
     }];
   }
 
   $(document).ready(() => {
     let converter = new showdown.Converter({
       tables: true,
       extensions: [showdownHighlight]
     });
     fetch(markdownDocUrl)
       .then(handleFetchError)
       .then(response => response.text())
       .then(data => {
         $(domElt).addClass('swh-showdown');
         $(domElt).html(swh.webapp.filterXSS(converter.makeHtml(data)));
       })
       .catch(() => {
         $(domElt).text('Readme bytes are not available');
       });
   });
 
 }
 
 export async function renderOrgData(domElt, orgDocData) {
 
   let org = await import(/* webpackChunkName: "org" */ 'utils/org');
 
   let parser = new org.Parser();
   let orgDocument = parser.parse(orgDocData, {toc: false});
   let orgHTMLDocument = orgDocument.convert(org.ConverterHTML, {});
   $(domElt).addClass('swh-org');
   $(domElt).html(swh.webapp.filterXSS(orgHTMLDocument.toString()));
   // remove toc and section numbers to get consistent
   // with other readme renderings
   $('.swh-org ul').first().remove();
   $('.section-number').remove();
 
 }
 
 export function renderOrg(domElt, orgDocUrl) {
 
   $(document).ready(() => {
     fetch(orgDocUrl)
       .then(handleFetchError)
       .then(response => response.text())
       .then(data => {
         renderOrgData(domElt, data);
       })
       .catch(() => {
         $(domElt).text('Readme bytes are not available');
       });
   });
 
 }
 
 export function renderTxt(domElt, txtDocUrl) {
 
   $(document).ready(() => {
     fetch(txtDocUrl)
       .then(handleFetchError)
       .then(response => response.text())
       .then(data => {
         let orgMode = '-*- mode: org -*-';
         if (data.indexOf(orgMode) !== -1) {
           renderOrgData(domElt, data.replace(orgMode, ''));
         } else {
           $(domElt).addClass('swh-readme-txt');
           $(domElt)
             .html('')
             .append($('<pre></pre>').text(data));
         }
       })
       .catch(() => {
         $(domElt).text('Readme bytes are not available');
       });
   });
 
 }