diff --git a/src/server/game/AI/CoreAI/GameObjectAI.h b/src/server/game/AI/CoreAI/GameObjectAI.h
index 35daca943a..e72157ccd7 100644
--- a/src/server/game/AI/CoreAI/GameObjectAI.h
+++ b/src/server/game/AI/CoreAI/GameObjectAI.h
@@ -25,6 +25,7 @@
 #include "QuestDef.h"
 #include "GameObject.h"
 #include "CreatureAI.h"
+#include "ObjectGuid.h"
 
 class TC_GAME_API GameObjectAI
 {