diff --git a/src/game/Unit.h b/src/game/Unit.h
index 7632de82abc..d56a0831cdc 100644
--- a/src/game/Unit.h
+++ b/src/game/Unit.h
@@ -857,6 +857,7 @@ class TRINITY_DLL_SPEC Unit : public WorldObject
 
         virtual ~Unit ( );
 
+        void AddToWorld();
         void RemoveFromWorld();
 
         void CleanupsBeforeDelete();                        // used in ~Creature/~Player (or before mass creature delete to remove cross-references to already deleted units)