diff --git a/src/server/game/AI/CoreAI/GameObjectAI.h b/src/server/game/AI/CoreAI/GameObjectAI.h
index fb982ce878d..952a5c58fd4 100644
--- a/src/server/game/AI/CoreAI/GameObjectAI.h
+++ b/src/server/game/AI/CoreAI/GameObjectAI.h
@@ -24,6 +24,7 @@
 #include <list>
 
 class GameObject;
+class SpellInfo;
 class Unit;
 
 class TC_GAME_API GameObjectAI