diff --git a/client/js/app.js b/client/js/app.js
index 7679cca..b6d7311 100644
--- a/client/js/app.js
+++ b/client/js/app.js
@@ -84,6 +84,7 @@
   ws.disconnect();
   currentId = sessionId;
   history.replaceState(null, '', '#' + sessionId);
+  tokenCounterEl.hidden = true;
   rerenderSidebar();
 
   const s = sessions.find(s => s.session_id === sessionId);
@@ -363,7 +364,7 @@
 }
 
 function updateTokenCounter(used, max) {
-  if (!used || !max) return;
+  if (!used || !max) { tokenCounterEl.hidden = true; return; }
   const pct = Math.round((used / max) * 100);
   tokenCounterEl.textContent = `${used.toLocaleString()}/${max.toLocaleString()} (${pct}%) tokens`;
   tokenCounterEl.classList.toggle('warn',   pct >= 50 && pct < 80);