diff --git a/app.py b/app.py
index 4997ca7..c3b8a33 100644
--- a/app.py
+++ b/app.py
@@ -129,7 +129,8 @@ def index():
 @app.route('/danke')
 def danke():
     id = request.args.get('id')
-    adresse = Adresse.query.get(id)
+    # Use session.get to avoid SQLAlchemy LegacyAPIWarning and cast id to int if present
+    adresse = db.session.get(Adresse, int(id)) if id else None
     return render_template('danke.html', adresse=adresse)