diff --git a/server/gameserver/hero.cc b/server/gameserver/hero.cc
index 1f536a1f..dea7486e 100644
--- a/server/gameserver/hero.cc
+++ b/server/gameserver/hero.cc
@@ -333,9 +333,6 @@ std::string Hero::GetName()
 void Hero::DropItems(Obstacle* obstacle)
 {
     bool is_treasure_box = false;
-    if (obstacle->IsEntitySubType(EST_RoomObstacle)) {
-        is_treasure_box = ((RoomObstacle*)obstacle)->is_treasure_box;
-    }
     int drop_id = obstacle->meta->RandDrop();
     if (drop_id == 0) {
         return;
diff --git a/server/gameserver/human.cc b/server/gameserver/human.cc
index 66e14cd7..04f32867 100644
--- a/server/gameserver/human.cc
+++ b/server/gameserver/human.cc
@@ -1870,9 +1870,6 @@ void Human::DecItem(int item_id, int item_num)
 void Human::DropItems(Obstacle* obstacle)
 {
     bool is_treasure_box = false;
-    if (obstacle->IsEntitySubType(EST_RoomObstacle)) {
-        is_treasure_box = ((RoomObstacle*)obstacle)->is_treasure_box;
-    }
     int drop_id = obstacle->meta->RandDrop();
     if (drop_id == 0) {
         return;
diff --git a/server/gameserver/roomobstacle.h b/server/gameserver/roomobstacle.h
index eb29d863..381d43b7 100644
--- a/server/gameserver/roomobstacle.h
+++ b/server/gameserver/roomobstacle.h
@@ -11,7 +11,6 @@ class RoomObstacle : public Obstacle
  public:
     Room* room = nullptr;
     a8::Attacher xtimer_attacher;
-    bool is_treasure_box = false;
     CreatureWeakPtr master;
     int real_object_uniid = 0;
     std::shared_ptr<Ability> context_ability;