diff --git a/src/server/scripts/EasternKingdoms/SunwellPlateau/boss_felmyst.cpp b/src/server/scripts/EasternKingdoms/SunwellPlateau/boss_felmyst.cpp
index 2c29cce45..b7e6e1fac 100644
--- a/src/server/scripts/EasternKingdoms/SunwellPlateau/boss_felmyst.cpp
+++ b/src/server/scripts/EasternKingdoms/SunwellPlateau/boss_felmyst.cpp
@@ -394,6 +394,7 @@ struct npc_demonic_vapor_trail : public NullCreatureAI
     void Reset() override
     {
         me->CastSpell(me, SPELL_DEMONIC_VAPOR_TRAIL_PERIODIC, true);
+        me->DespawnOrUnsummon(20000);
     }
 
     void SpellHitTarget(Unit*, SpellInfo const* spellInfo) override