diff --git a/src/server/scripts/Outland/HellfireCitadel/MagtheridonsLair/boss_magtheridon.cpp b/src/server/scripts/Outland/HellfireCitadel/MagtheridonsLair/boss_magtheridon.cpp
index 0c5c70a2c..f301dbfcc 100644
--- a/src/server/scripts/Outland/HellfireCitadel/MagtheridonsLair/boss_magtheridon.cpp
+++ b/src/server/scripts/Outland/HellfireCitadel/MagtheridonsLair/boss_magtheridon.cpp
@@ -170,6 +170,7 @@ struct boss_magtheridon : public BossAI
 
     void ScheduleCombatEvents()
     {
+        me->GetThreatMgr().ClearAllThreat();
         me->RemoveUnitFlag(UNIT_FLAG_NOT_SELECTABLE);
         me->SetImmuneToPC(false);
         me->SetReactState(REACT_AGGRESSIVE);