Index: java/com/l2jserver/gameserver/model/L2Skill.java
===================================================================
--- java/com/l2jserver/gameserver/model/L2Skill.java    (revision 5910)
+++ java/com/l2jserver/gameserver/model/L2Skill.java    (working copy)
@@ -2357,9 +2357,9 @@
            return false;

        final L2PcInstance player = caster.getActingPlayer();
+       final L2PcInstance targetPlayer = target.getActingPlayer();
        if (player != null)
        {
-           final L2PcInstance targetPlayer = target.getActingPlayer();
            if (targetPlayer != null)
            {
                if (targetPlayer == caster || targetPlayer == player)
@@ -2407,8 +2407,26 @@
        else
        {
            // source is not playable
-           if (!(target instanceof L2Playable))
-               return false;
+           if (caster instanceof L2Attackable)
+           {
+               // target is mob
+               if (targetPlayer == null)
+               {
+                   if (target instanceof L2Attackable)
+                   {
+                       String casterEnemyClan = ((L2Attackable)caster).getEnemyClan();
+                       if (casterEnemyClan == null || casterEnemyClan.isEmpty())
+                           return false;
+
+                       String targetClan = ((L2Attackable)target).getClan();
+                       if (targetClan == null || targetClan.isEmpty())
+                           return false;
+
+                       if (!casterEnemyClan.equals(targetClan))
+                           return false;
+                   }
+               }
+           }
        }

        if (geoEnabled && !GeoData.getInstance().canSeeTarget(caster, target))