diff --git a/src/server/scripts/Northrend/ObsidianSanctum/boss_sartharion.cpp b/src/server/scripts/Northrend/ObsidianSanctum/boss_sartharion.cpp
index e9b8a0ed2fb..9ebecddfbb9 100644
--- a/src/server/scripts/Northrend/ObsidianSanctum/boss_sartharion.cpp
+++ b/src/server/scripts/Northrend/ObsidianSanctum/boss_sartharion.cpp
@@ -1610,6 +1610,7 @@ public:
 
         void Reset()
         {
+            me->SetReactState(REACT_PASSIVE);
             Tsunami_Timer = 100;
             me->SetFlag(UNIT_FIELD_FLAGS, UNIT_FLAG_NON_ATTACKABLE);
             me->SetFlag(UNIT_FIELD_FLAGS, UNIT_FLAG_NOT_SELECTABLE);