diff --git a/src/pages/karte.astro b/src/pages/karte.astro
index 5380663..9c7d066 100644
--- a/src/pages/karte.astro
+++ b/src/pages/karte.astro
@@ -187,9 +187,12 @@ const jsonld={'@context':'https://schema.org','@type':'WebApplication',name:'Kü
   const map=new maplibregl.Map({container:'map',style:'https://tiles.openfreemap.org/styles/liberty',center:[9.6,50.6],zoom:4.4});
   map.addControl(new maplibregl.NavigationControl(),'top-right');
   function setMap(list){
+    // Karte erst befüllen, wenn der Style geladen ist (sonst getSource()=undefined -> würde render() abbrechen)
+    const sAll=map.getSource('all'), sAv=map.getSource('av');
+    if(!sAll||!sAv)return;
     const all={type:'FeatureCollection',features:list.map(s=>({type:'Feature',geometry:{type:'Point',coordinates:[s.lo,s.la]},properties:{}}))};
     const av={type:'FeatureCollection',features:list.filter(s=>status(s)?.a).map(s=>({type:'Feature',geometry:{type:'Point',coordinates:[s.lo,s.la]},properties:{n:s.n,ci:s.ci,t:s.t||null}}))};
-    map.getSource('all').setData(all);map.getSource('av').setData(av);
+    sAll.setData(all);sAv.setData(av);
   }
   function priceStrip(){
     const el=$('#pricestrip');