diff --git a/src/game/SharedDefines.h b/src/game/SharedDefines.h
index b2b62f0fe..64800a546 100644
--- a/src/game/SharedDefines.h
+++ b/src/game/SharedDefines.h
@@ -2407,10 +2407,10 @@ enum PetDiet
 
 enum AiReaction
 {
-    AI_REACTION_UNK1    = 1,
-    AI_REACTION_AGGRO   = 2,                                // trigger aggro sound to play, if defined in dbc
-    AI_REACTION_UNK3    = 3,                                // seen happen at polymorph, possible when AI not in control of self?
-    AI_REACTION_UNK4    = 4
+    AI_REACTION_ALERT    = 0,
+    AI_REACTION_FRIENDLY = 1,
+    AI_REACTION_HOSTILE  = 2,                               // only currently existing reaction
+    AI_REACTION_AFRAID   = 3
 };
 
 // Diminishing Returns Types
diff --git a/src/game/Unit.cpp b/src/game/Unit.cpp
index 459745786..1af4805d5 100644
--- a/src/game/Unit.cpp
+++ b/src/game/Unit.cpp
@@ -8373,7 +8373,7 @@ bool Unit::Attack(Unit *victim, bool meleeAttack)
 
     if (GetTypeId() == TYPEID_UNIT)
     {
-        ((Creature*)this)->SendAIReaction(AI_REACTION_AGGRO);
+        ((Creature*)this)->SendAIReaction(AI_REACTION_HOSTILE);
         ((Creature*)this)->CallAssistance();
     }
 
@@ -12561,7 +12561,7 @@ void Unit::SendPetAIReaction(uint64 guid)
 
     WorldPacket data(SMSG_AI_REACTION, 8 + 4);
     data << uint64(guid);
-    data << uint32(AI_REACTION_AGGRO);
+    data << uint32(AI_REACTION_HOSTILE);
     ((Player*)owner)->GetSession()->SendPacket(&data);
 }
 
diff --git a/src/shared/revision_nr.h b/src/shared/revision_nr.h
index 2911c97cc..9be753b61 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 "9558"
+ #define REVISION_NR "9559"
 #endif // __REVISION_NR_H__