diff --git a/backend/static/js/pages/poison.js b/backend/static/js/pages/poison.js
index f44977c..d473bbd 100644
--- a/backend/static/js/pages/poison.js
+++ b/backend/static/js/pages/poison.js
@@ -133,10 +133,13 @@ window.Page_poison = (() => {
       maxZoom: 19,
     }).addTo(_map);
 
-    // Attribution-Elemente aus dem DOM entfernen (doppelt sicher)
-    setTimeout(() => {
-      document.querySelectorAll('.leaflet-control-attribution').forEach(el => el.remove());
-    }, 300);
+    // Attribution komplett unterdrücken — per Style-Injection (cache-sicher)
+    if (!document.getElementById('leaflet-attribution-hide')) {
+      const s = document.createElement('style');
+      s.id = 'leaflet-attribution-hide';
+      s.textContent = '.leaflet-control-attribution { display: none !important; }';
+      document.head.appendChild(s);
+    }
   }
 
   // ----------------------------------------------------------