diff --git a/server/gameserver/roomobstacle.cc b/server/gameserver/roomobstacle.cc
index 0a7b00e..ed8b001 100644
--- a/server/gameserver/roomobstacle.cc
+++ b/server/gameserver/roomobstacle.cc
@@ -401,12 +401,6 @@ void RoomObstacle::ActiveTrap()
 
 void RoomObstacle::ActivePosionGas()
 {
-    room->frame_event.AddExplosionEx
-        (master,
-         0,//task->meta->i->id(),
-         GetPos(),
-         meta->i->explosion_effect());
-
     room->xtimer.AddDeadLineTimerAndAttach
         (
          meta->i->time() / FRAME_RATE_MS,