diff --git a/server/gameserver/creature.cc b/server/gameserver/creature.cc
index 4da2904..94f2060 100644
--- a/server/gameserver/creature.cc
+++ b/server/gameserver/creature.cc
@@ -1032,6 +1032,9 @@ bool Creature::IsProperTarget(Creature* target)
     if (room->GetRoomMode() == kZombieMode && GetRace() == target->GetRace()) {
         return false;
     }
+    if (target->HasBuffEffect(kBET_Invincible)) {
+        return false;
+    }
     return true;
 }