diff --git a/display/frontend/src/pages/MqttTopics.tsx b/display/frontend/src/pages/MqttTopics.tsx
index 50f1e7d..9efe764 100644
--- a/display/frontend/src/pages/MqttTopics.tsx
+++ b/display/frontend/src/pages/MqttTopics.tsx
@@ -40,8 +40,10 @@ export default function MqttTopics() {
     setDiscoveryMsg('');
     try {
       await api.post(`/api/mqtt/brokers/${brokerId}/topics/discover`, { prefix: prefix || null });
-      setDiscoveryMsg('Discovery gestartet. Topics erscheinen nach einigen Sekunden.');
-      setTimeout(() => load(), 3000);
+      setDiscoveryMsg('Discovery laeuft 30 Sekunden... Liste wird automatisch aktualisiert.');
+      // Refresh every 3 seconds during the 30s discovery window
+      const interval = setInterval(() => load(), 3000);
+      setTimeout(() => { clearInterval(interval); setDiscoveryMsg('Discovery abgeschlossen.'); load(); }, 32000);
     } catch (e) {
       setError((e as Error).message);
     }