diff --git a/site/admin.html b/site/admin.html
index d5b954e..f9e1376 100644
--- a/site/admin.html
+++ b/site/admin.html
@@ -834,7 +834,7 @@ async function mapFind(){
 
 // ---------- helpers ----------
 function vSoon(title, body){ return () => { $('#content').innerHTML = `<h2>${title}</h2><div class="card soon">${body}<br><br>Coming next.</div>`; }; }
-function escapeH(s){ return (s||'').replace(/[&<>"]/g, c => ({'&':'&amp;','<':'&lt;','>':'&gt;','"':'&quot;'}[c])); }
+function escapeH(s){ return (s==null?'':String(s)).replace(/[&<>"]/g, c => ({'&':'&amp;','<':'&lt;','>':'&gt;','"':'&quot;'}[c])); }
 
 if(TOKEN){ $('#tok').value = TOKEN; signin(); }
 </script>