diff --git a/app.py b/app.py
index 512585a..97623a2 100644
--- a/app.py
+++ b/app.py
@@ -173,6 +173,7 @@ def quiz(playlist_id):
     session[f'played_tracks_{playlist_id}'] = played_tracks
     session[f'score_{playlist_id}'] = score
     session[f'total_played_{playlist_id}'] = total_played
+    session.modified = True  # Erzwinge Session-Speicherung
 
     # Für die Anzeige der beantworteten Fragen (nutze total_played statt len(played_tracks))
     answered = total_played - 1 if total_played > 0 else 0