diff --git a/server/gameserver/creature.cc b/server/gameserver/creature.cc
index c6c8f71..26019d6 100644
--- a/server/gameserver/creature.cc
+++ b/server/gameserver/creature.cc
@@ -23,7 +23,7 @@ void InternalShot(Creature* c,
     if (weapon_meta->i->_inventory_slot() == IS_TRAP ||
         weapon_meta->i->_inventory_slot() == IS_MINE) {
         a8::Vec2 old_buff_vec2_param1 = c->buff_vec2_param1;
-        c->buff_vec2_param1 = c->GetPos();
+        c->buff_vec2_param1 = c->GetPos() + c->GetAttackDir() * fly_distance;
         MetaData::Buff * buff_meta = MetaMgr::Instance()->GetBuff(bullet_meta->i->buffid());
         if (buff_meta) {
             c->AddBuff(c,