diff --git a/frontend/public/sw.js b/frontend/public/sw.js
index 29b6688..1e36828 100644
--- a/frontend/public/sw.js
+++ b/frontend/public/sw.js
@@ -13,6 +13,9 @@ self.addEventListener('activate', e => {
 self.addEventListener('fetch', e => {
   const url = e.request.url;
 
+  // Externe URLs (Favicons, Fonts, etc.) immer direkt – kein SW-Intercept
+  if (!url.startsWith(self.location.origin)) return;
+
   // API immer live
   if (url.includes('/api/')) {
     e.respondWith(fetch(e.request).catch(() => new Response('Offline', { status: 503 })));
@@ -33,7 +36,7 @@ self.addEventListener('fetch', e => {
     return;
   }
 
-  // Alles andere (Bilder, Fonts, Manifests): cache-first
+  // Alles andere (eigene Bilder, Manifests): cache-first
   e.respondWith(
     caches.match(e.request).then(cached => {
       if (cached) return cached;