diff --git a/lib/docs/main.js b/lib/docs/main.js
index 6823a97cc..be922710a 100644
--- a/lib/docs/main.js
+++ b/lib/docs/main.js
@@ -1641,7 +1641,11 @@ const NAV_MODES = {
         return payloadHtml;
       }
       case "null": {
-        return "null";
+        if (opts.wantHtml) {
+          return '<span class="tok-null">null</span>';
+        } else {
+          return "null";
+        }
       }
       case "array": {
         let payloadHtml = ".{";