diff --git a/app.js b/app.js
index e66332c..867b49c 100644
--- a/app.js
+++ b/app.js
@@ -47,7 +47,8 @@ function hide_start_screen(){
 //TODO given parameters on URL do this automatically
 function setup_schnitzeljagd(json){
     hide_start_screen();
-    map.setView(data.position, 15)
+    map.setView(data.position, 15);
+    map.invalidateSize();
 }
 
 function pfalz(){
@@ -197,4 +198,4 @@ async function encrypt(secret, password) {
 
     // Display the Base64-encoded encrypted secret
     return base64Encoded
-}
\ No newline at end of file
+}