diff --git a/CommonCore/SQL/src/de/steamwar/sql/NodeMember.kt b/CommonCore/SQL/src/de/steamwar/sql/NodeMember.kt
index 410fc140..9c8c31b4 100644
--- a/CommonCore/SQL/src/de/steamwar/sql/NodeMember.kt
+++ b/CommonCore/SQL/src/de/steamwar/sql/NodeMember.kt
@@ -81,6 +81,7 @@ class NodeMember(id: EntityID<CompositeID>) : CompositeEntity(id) {
     var parent by NodeMemberTable.parentNode.transform(
         { it.map { EntityID(it, SchematicNodeTable) }.getOrNull() },
         { Optional.ofNullable(it?.value) })
+        private set
 
     fun setParentId(id: Int?) {
         parent = Optional.ofNullable(id)
diff --git a/LobbySystem/src/de/steamwar/lobby/special/advent/Present.java b/LobbySystem/src/de/steamwar/lobby/special/advent/Present.java
index d8b2a908..0bbb7a86 100644
--- a/LobbySystem/src/de/steamwar/lobby/special/advent/Present.java
+++ b/LobbySystem/src/de/steamwar/lobby/special/advent/Present.java
@@ -99,7 +99,7 @@ public class Present {
         }
         NodeMember nodeMember = NodeMember.createNodeMember(schematicId, user.getId());
         if (folder != null) {
-            nodeMember.setParent(Optional.of(folder.getId()));
+            nodeMember.setParentId(folder.getId());
         }
         LobbySystem.getMessage().send("ADVENT_CALENDAR_OPEN", player, node.getName());
         player.playSound(location, Sound.ENTITY_EXPERIENCE_ORB_PICKUP, 1, 1);