diff --git a/src/server/game/AI/SmartScripts/SmartAI.cpp b/src/server/game/AI/SmartScripts/SmartAI.cpp
index 05d311de6..942041d08 100644
--- a/src/server/game/AI/SmartScripts/SmartAI.cpp
+++ b/src/server/game/AI/SmartScripts/SmartAI.cpp
@@ -811,6 +811,20 @@ void SmartAI::JustSummoned(Creature* creature)
 {
     GetScript()->ProcessEventsFor(SMART_EVENT_SUMMONED_UNIT, creature);
     GetScript()->AddCreatureSummon(creature->GetGUID());
+
+    if (me->IsEngaged() && !creature->IsInEvadeMode())
+    {
+        if (Unit* victim = me->GetVictim())
+        {
+            creature->SetInCombatWith(victim);
+            victim->SetInCombatWith(creature);
+
+            if (creature->CanHaveThreatList())
+            {
+                creature->AddThreat(victim, 0.0f);
+            }
+        }
+    }
 }
 
 void SmartAI::SummonedCreatureDies(Creature* summon, Unit* /*killer*/)