diff --git a/server/gameserver/creature.cc b/server/gameserver/creature.cc
index f254822..38224cc 100644
--- a/server/gameserver/creature.cc
+++ b/server/gameserver/creature.cc
@@ -1898,6 +1898,9 @@ void Creature::SummonObstacle(Buff* buff, int id, const a8::Vec2& pos)
         obstacle->Active();
         obstacle->context_ability = context_ability;
         slave_things_.push_back(std::make_tuple(buff->meta->i->buff_id(), obstacle));
+#ifdef DEBUG
+        SendDebugMsg(a8::Format("召唤物件 buff_id:%d thing_id:%d", {buff->meta->i->buff_id(), id}));
+#endif
     } else {
         abort();
     }