diff --git a/src/game/Creature.cpp b/src/game/Creature.cpp
index e5d5a48fe..440b1335d 100644
--- a/src/game/Creature.cpp
+++ b/src/game/Creature.cpp
@@ -91,6 +91,27 @@ VendorItem const* VendorItemData::FindItem(uint32 item_id) const
     return NULL;
 }
 
+bool AssistDelayEvent::Execute(uint64 /*e_time*/, uint32 /*p_time*/)
+{
+    Unit* victim = Unit::GetUnit(m_owner, m_victim);
+    if (victim)
+    {
+        while (!m_assistants.empty())
+        {
+            Creature* assistant = (Creature*)Unit::GetUnit(m_owner, *m_assistants.begin());
+            m_assistants.pop_front();
+
+            if (assistant)
+            {
+                assistant->SetNoCallAssistence(true);
+                if(assistant->AI())
+                    assistant->AI()->AttackStart(victim);
+            }
+        }
+    }
+    return true;
+}
+
 Creature::Creature() :
 Unit(), i_AI(NULL),
 lootForPickPocketed(false), lootForBody(false), m_groupLootTimer(0), lootingGroupLeaderGUID(0),
@@ -1669,7 +1690,7 @@ void Creature::CallAssistence()
     {
         SetNoCallAssistence(true);
 
-        float radius = sWorld.getConfig(CONFIG_CREATURE_FAMILY_ASSISTEMCE_RADIUS);
+        float radius = sWorld.getConfig(CONFIG_CREATURE_FAMILY_ASSISTANCE_RADIUS);
         if(radius > 0)
         {
             std::list<Creature*> assistList;
@@ -1689,11 +1710,16 @@ void Creature::CallAssistence()
                 cell_lock->Visit(cell_lock, grid_creature_searcher, *GetMap());
             }
 
-            for(std::list<Creature*>::iterator iter = assistList.begin(); iter != assistList.end(); ++iter)
+            if (!assistList.empty())
             {
-                (*iter)->SetNoCallAssistence(true);
-                if((*iter)->AI())
-                    (*iter)->AI()->AttackStart(getVictim());
+                AssistDelayEvent *e = new AssistDelayEvent(getVictim()->GetGUID(), *this);
+                while (!assistList.empty())
+                {
+                    // Pushing guids because in delay can happen some creature gets despawned => invalid pointer
+                    e->AddAssistant((*assistList.begin())->GetGUID());
+                    assistList.pop_front();
+                }
+                m_Events.AddEvent(e, m_Events.CalculateTime(sWorld.getConfig(CONFIG_CREATURE_FAMILY_ASSISTANCE_DELAY)));
             }
         }
     }
diff --git a/src/game/Creature.h b/src/game/Creature.h
index 997faf652..03f317d81 100644
--- a/src/game/Creature.h
+++ b/src/game/Creature.h
@@ -27,6 +27,8 @@
 #include "Database/DatabaseEnv.h"
 #include "Cell.h"
 
+#include <list>
+
 struct SpellEntry;
 
 class CreatureAI;
@@ -646,4 +648,20 @@ class MANGOS_DLL_SPEC Creature : public Unit
         GridReference<Creature> m_gridRef;
         CreatureInfo const* m_creatureInfo;                 // in heroic mode can different from ObjMgr::GetCreatureTemplate(GetEntry())
 };
+
+class AssistDelayEvent : public BasicEvent
+{
+    public:
+        AssistDelayEvent(const uint64& victim, Unit& owner) : BasicEvent(), m_victim(victim), m_owner(owner) { }
+
+        bool Execute(uint64 e_time, uint32 p_time);
+        void AddAssistant(const uint64& guid) { m_assistants.push_back(guid); }
+    private:
+        AssistDelayEvent();
+
+        uint64            m_victim;
+        std::list<uint64> m_assistants;
+        Unit&             m_owner;
+};
+
 #endif
diff --git a/src/game/World.cpp b/src/game/World.cpp
index 3c4a66402..cb50c09f4 100644
--- a/src/game/World.cpp
+++ b/src/game/World.cpp
@@ -757,7 +757,8 @@ void World::LoadConfigSettings(bool reload)
 
     m_configs[CONFIG_EVENT_ANNOUNCE] = sConfig.GetIntDefault("Event.Announce",0);
 
-    m_configs[CONFIG_CREATURE_FAMILY_ASSISTEMCE_RADIUS] = sConfig.GetIntDefault("CreatureFamilyAssistenceRadius",10);
+    m_configs[CONFIG_CREATURE_FAMILY_ASSISTANCE_RADIUS] = sConfig.GetIntDefault("CreatureFamilyAssistanceRadius",10);
+    m_configs[CONFIG_CREATURE_FAMILY_ASSISTANCE_DELAY]  = sConfig.GetIntDefault("CreatureFamilyAssistanceDelay",1500);
 
     m_configs[CONFIG_WORLD_BOSS_LEVEL_DIFF] = sConfig.GetIntDefault("WorldBossLevelDiff",3);
 
diff --git a/src/game/World.h b/src/game/World.h
index b5a66e7d6..0b2693ba1 100644
--- a/src/game/World.h
+++ b/src/game/World.h
@@ -144,7 +144,8 @@ enum WorldConfigs
     CONFIG_CHATFLOOD_MESSAGE_DELAY,
     CONFIG_CHATFLOOD_MUTE_TIME,
     CONFIG_EVENT_ANNOUNCE,
-    CONFIG_CREATURE_FAMILY_ASSISTEMCE_RADIUS,
+    CONFIG_CREATURE_FAMILY_ASSISTANCE_RADIUS,
+    CONFIG_CREATURE_FAMILY_ASSISTANCE_DELAY,
     CONFIG_WORLD_BOSS_LEVEL_DIFF,
     CONFIG_QUEST_LOW_LEVEL_HIDE_DIFF,
     CONFIG_QUEST_HIGH_LEVEL_HIDE_DIFF,
diff --git a/src/mangosd/mangosd.conf.dist.in b/src/mangosd/mangosd.conf.dist.in
index 4c69f2de5..093f65f3c 100644
--- a/src/mangosd/mangosd.conf.dist.in
+++ b/src/mangosd/mangosd.conf.dist.in
@@ -613,11 +613,15 @@ TalentsInspecting = 1
 #                 1.5 - 150%
 #                 0   - off (0%)
 #
-#    CreatureFamilyAssistenceRadius
-#        Creature family assistence radius
+#    CreatureFamilyAssistanceRadius
+#        Creature family assistance radius
 #        Default: 10
 #                 0   - off
 #
+#    CreatureFamilyAssistanceDelay
+#        Reaction time for creature assistance call
+#        Default: 1500 (1.5s)
+#
 #    WorldBossLevelDiff
 #        Difference for boss dynamic level with target
 #        Default: 3
@@ -674,7 +678,8 @@ TalentsInspecting = 1
 
 ThreatRadius = 100
 Rate.Creature.Aggro = 1
-CreatureFamilyAssistenceRadius = 10
+CreatureFamilyAssistanceRadius = 10
+CreatureFamilyAssistanceDelay = 1500
 WorldBossLevelDiff = 3
 Corpse.Decay.NORMAL = 60
 Corpse.Decay.RARE = 300
diff --git a/src/shared/revision_nr.h b/src/shared/revision_nr.h
index c11091573..b826c3e6f 100644
--- a/src/shared/revision_nr.h
+++ b/src/shared/revision_nr.h
@@ -1,4 +1,4 @@
 #ifndef __REVISION_NR_H__
 #define __REVISION_NR_H__
- #define REVISION_NR "6844"
+ #define REVISION_NR "6845"
 #endif // __REVISION_NR_H__