diff --git a/swh/web/assets/src/bundles/browse/origin-search.js b/swh/web/assets/src/bundles/browse/origin-search.js
--- a/swh/web/assets/src/bundles/browse/origin-search.js
+++ b/swh/web/assets/src/bundles/browse/origin-search.js
@@ -43,7 +43,7 @@
       table.append(tableRow);
       // get async latest visit snapshot and update visit status icon
       let latestSnapshotUrl = Urls.api_1_origin_visit_latest(origin.url);
-      latestSnapshotUrl += "?require_snapshot=true";
+      latestSnapshotUrl += '?require_snapshot=true';
       fetch(latestSnapshotUrl)
         .then(response => response.json())
         .then(data => {
diff --git a/swh/web/templates/includes/content-display.html b/swh/web/templates/includes/content-display.html
--- a/swh/web/templates/includes/content-display.html
+++ b/swh/web/templates/includes/content-display.html
@@ -53,7 +53,18 @@
     {% elif swh_object_metadata.filename and swh_object_metadata.filename|default:""|slice:"-5:" == "ipynb" %}
       swh.webapp.renderNotebook({{ top_right_link.url|jsonify }}, '.swh-ipynb');
     {% elif content %}
+      let codeContainer = $('code');
+      let content = codeContainer.text();
+
       swh.webapp.highlightCode();
+
+      function updateLanguage(language) {
+        codeContainer.text(content);
+        codeContainer.removeClass();
+        codeContainer.addClass(language);
+
+        swh.webapp.highlightCode();
+      }
     {% endif %}
   </script>
 {% endif %}