diff --git a/src/server/game/Instances/InstanceSaveMgr.h b/src/server/game/Instances/InstanceSaveMgr.h
index f22905cbd..31563834b 100644
--- a/src/server/game/Instances/InstanceSaveMgr.h
+++ b/src/server/game/Instances/InstanceSaveMgr.h
@@ -35,6 +35,7 @@ struct MapEntry;
 class Player;
 class Group;
 class InstanceSaveManager;
+class InstanceSave;
 
 struct InstancePlayerBind
 {