diff --git a/source b/source
index 3d3a35b161d..fba2afb60f6 100644
--- a/source
+++ b/source
@@ -58,7 +58,7 @@
  <body>
   <script w-dev src="/dev/search.js" async></script>
   <script w-nodev w-noreview crossorigin src="/html-dfn.js" defer></script>
-  <script w-nodev w-noreview crossorigin src="var-click-highlighting.js" defer></script>
+  <script w-nodev w-noreview crossorigin src="/var-click-highlighting.js" defer></script>
   <script w-nodev w-noreview w-nosplit crossorigin src="https://resources.whatwg.org/commit-snapshot-shortcut-key.js" defer></script>
   <header class="head with-buttons" id="head">
    <a href="https://whatwg.org/" class="logo"><img crossorigin width="100" height="100" alt="WHATWG" src="https://resources.whatwg.org/logo.svg" class="darkmode-aware"></a>
