diff --git a/backend/routes/achievements.py b/backend/routes/achievements.py
index bff2421..76e023c 100644
--- a/backend/routes/achievements.py
+++ b/backend/routes/achievements.py
@@ -281,7 +281,8 @@ def check_and_award(user_id: int, conn):
 async def my_achievements(user=Depends(get_current_user)):
     uid = user["id"]
     with db() as conn:
-        update_streak(uid, conn)
+        # Streak NICHT beim Öffnen bumpen — nur echte Touren zählen
+        # (create_route / record_walk). check_and_award bleibt (Badges, idempotent).
         new_badges = check_and_award(uid, conn)
 
         stats = conn.execute("""
@@ -302,8 +303,16 @@ async def my_achievements(user=Depends(get_current_user)):
         """, (uid, uid, uid, uid, uid, uid, uid, uid, uid)).fetchone()
 
         streak_row = conn.execute(
-            "SELECT current_streak, max_streak FROM users WHERE id=?", (uid,)
+            "SELECT current_streak, max_streak, last_activity_date FROM users WHERE id=?", (uid,)
         ).fetchone()
+        # Angezeigter Streak: nur gültig, wenn die letzte echte Tour heute oder
+        # gestern war — sonst gerissen (0). Gespeicherten Wert NICHT verändern
+        # (wird erst bei der nächsten echten Tour zurückgesetzt).
+        _today = date.today().isoformat()
+        _yest  = (date.today() - timedelta(days=1)).isoformat()
+        display_streak = ((streak_row["current_streak"] or 0)
+                          if streak_row and streak_row["last_activity_date"] in (_today, _yest)
+                          else 0)
 
         # Wetter-Tapferkeit
         wetter_row = conn.execute("""
@@ -422,7 +431,7 @@ async def my_achievements(user=Depends(get_current_user)):
 
     return {
         "stats":      dict(stats) if stats else {},
-        "streak":     {"current": streak_row["current_streak"] if streak_row else 0,
+        "streak":     {"current": display_streak,
                        "max":     streak_row["max_streak"]     if streak_row else 0},
         "rang":       rank_row["rang"] if rank_row else 1,
         "categories": badge_categories,