diff --git a/src/game/SpellAuras.cpp b/src/game/SpellAuras.cpp
index 39604ab5f..5b2c1d968 100644
--- a/src/game/SpellAuras.cpp
+++ b/src/game/SpellAuras.cpp
@@ -405,7 +405,12 @@ m_updated(false), m_isRemovedOnShapeLost(true), m_in_use(false)
     Player* modOwner = caster ? caster->GetSpellModOwner() : NULL;
 
     if(!m_permanent && modOwner)
+    {
         modOwner->ApplySpellMod(GetId(), SPELLMOD_DURATION, m_maxduration);
+        // Get zero duration aura after - need set m_maxduration > 0 for apply/remove aura work
+        if (m_maxduration<=0)
+            m_maxduration = 1;
+    }
 
     m_duration = m_maxduration;
 
@@ -1768,11 +1773,8 @@ void Aura::TriggerSpell()
                 {
                     // Invisibility
                     case 66:
-                    {
-                        if(!m_duration)
-                            m_target->CastSpell(m_target, 32612, true, NULL, this);
+                    // Here need periodic triger reducing threat spell (or do it manually)
                         return;
-                    }
                     default:
                         break;
                 }
@@ -4036,6 +4038,11 @@ void Aura::HandleAuraModStalked(bool apply, bool Real)
 void Aura::HandlePeriodicTriggerSpell(bool apply, bool Real)
 {
     m_isPeriodic = apply;
+    if (m_spellProto->Id == 66 && !apply)
+    {
+        if (m_removeMode == AURA_REMOVE_BY_DEFAULT && m_duration<=0)
+            m_target->CastSpell(m_target, 32612, true, NULL, this);
+    }
 }
 
 void Aura::HandlePeriodicTriggerSpellWithValue(bool apply, bool Real)