diff --git a/src/server/scripts/Outland/HellfireCitadel/ShatteredHalls/boss_nethekurse.cpp b/src/server/scripts/Outland/HellfireCitadel/ShatteredHalls/boss_nethekurse.cpp
index ddf7cece6..c5ad3c1aa 100644
--- a/src/server/scripts/Outland/HellfireCitadel/ShatteredHalls/boss_nethekurse.cpp
+++ b/src/server/scripts/Outland/HellfireCitadel/ShatteredHalls/boss_nethekurse.cpp
@@ -131,7 +131,7 @@ struct boss_grand_warlock_nethekurse : public BossAI
 
     void SetData(uint32 data, uint32 value) override
     {
-        if (data != SETDATA_DATA)
+        if (data != SETDATA_DATA || me->IsInCombat())
             return;
 
         if (value == SETDATA_PEON_AGGRO && PeonEngagedCount <= 4)