diff --git a/server/gameserver/human.cc b/server/gameserver/human.cc
index 8a30de4..3093f36 100644
--- a/server/gameserver/human.cc
+++ b/server/gameserver/human.cc
@@ -561,7 +561,8 @@ bool Human::IsCollisionInMapService()
     if (room->OverBorder(GetPos(), meta->i->radius())){
         return true;
     }
-    if (HasBuffEffect(kBET_ThroughWall)) {
+    if (HasBuffEffect(kBET_ThroughWall) ||
+        HasBuffEffect(kBET_Fly)) {
         return false;
     }