diff --git a/llm-api/plan_router.py b/llm-api/plan_router.py
index b38c238..b36effb 100644
--- a/llm-api/plan_router.py
+++ b/llm-api/plan_router.py
@@ -325,11 +325,17 @@ def create_plan(p: Plan):
     if isinstance(payload.get("created_at"), datetime):
         payload["created_at"] = payload["created_at"].astimezone(timezone.utc).isoformat()
     # Materialisierte Section-Namen für robuste Filter/Indizes
+    """
     try:
         payload["plan_section_names"] = _norm_list([s.get("name", "") for s in (payload.get("sections") or [])])
     except Exception:
         payload["plan_section_names"] = _norm_list([s.name for s in (p.sections or [])])
-
+    """
+    try:
+        payload["plan_section_names"] = sorted({ (s.get("name") or "").strip() for s in (payload.get("sections") or []) if s.get("name") })
+    except Exception:
+        payload["plan_section_names"] = sorted({ (s.name or "").strip() for s in (p.sections or []) if getattr(s, "name", None) })
+    
     vec = _embed(_plan_embed_text(p))
     qdrant.upsert(collection_name=PLAN_COLLECTION, points=[PointStruct(id=str(p.id), vector=vec, payload=payload)])
     return p
@@ -391,7 +397,7 @@ def list_plans(
         must.append(FieldCondition(key="goals", match=MatchValue(value=goal)))
     if section:
         must.append(FieldCondition(key="plan_section_names", match=MatchValue(value=section)))
-
+        
     flt = Filter(must=must or None) if must else None
 
     fetch_n = max(offset + limit, 1)