diff --git a/server/gameserver/framemaker.cc b/server/gameserver/framemaker.cc
index 23bb935..a001df9 100644
--- a/server/gameserver/framemaker.cc
+++ b/server/gameserver/framemaker.cc
@@ -19,6 +19,14 @@ cs::SMUpdate* FrameMaker::MakeUpdateMsg(const Human* hum)
             itr->FillMFObjectFull(msg->add_full_objects());
         }
         for (auto& itr : hum->part_objects) {
+            #if 1
+            if (room->gas_data.gas_mode == GasJump &&
+                itr != hum &&
+                itr->entity_type == ET_Player &&
+                a8::HasBitFlag(((Human*)itr)->status, HS_Fly)) {
+                continue;
+            }
+            #endif
             itr->FillMFObjectPart(msg->add_part_objects());
         }
         for (auto& itr : hum->del_objects) {