diff --git a/static/js/main.js b/static/js/main.js
index 17d3932..67810aa 100644
--- a/static/js/main.js
+++ b/static/js/main.js
@@ -94,7 +94,8 @@ function bootToken() {
   }
 }
 function tickClock() {
-  $("#clock").textContent = new Date().toTimeString().slice(0, 5);
+  const c = $("#clock");
+  if (c) c.textContent = new Date().toTimeString().slice(0, 5);
 }
 
 for (const p of panels) p.mount?.();