diff --git a/server/gameserver/airdrop.cc b/server/gameserver/airdrop.cc
index 2dea6147..501489f0 100644
--- a/server/gameserver/airdrop.cc
+++ b/server/gameserver/airdrop.cc
@@ -61,7 +61,20 @@ void AirDrop::Exec(int appear_time, int box_id, int airdrop_id)
 #endif
     const mt::MapThing* thing_meta = mt::MapThing::GetById(box_id);
     if (thing_meta && thing_meta->type() == 2) {
+        glm::vec3 random_pt;
+        if (!room_->RandomSafeAreaPoint(random_pt)) {
+            return;
+        }
         glm::vec3 box_pos;
+        if (!room_->FindWalkablePointWithOutHouse
+            (
+             random_pt,
+             10,
+             10,
+             box_pos
+             )) {
+            return;
+        }
         room_->frame_event.AddAirDrop(appear_time, box_id, box_pos);
         room_->xtimer.SetTimeoutEx
             (SERVER_FRAME_RATE * appear_time / 1000.f,