diff --git a/include/game/World.h b/include/game/World.h
index edc4b19..413cfd3 100644
--- a/include/game/World.h
+++ b/include/game/World.h
@@ -111,6 +111,7 @@ typedef std::vector<MobPtr> MobList;
 
 typedef std::array<Color, 2> SpawnColorPalette;
 
+typedef std::shared_ptr<Tower> TowerPtr;
 
 class World {
 protected:
@@ -126,7 +127,7 @@ protected:
 
     MobList m_Mobs;
 
-    std::vector<Tower> m_Towers;
+    std::vector<TowerPtr> m_Towers;
 
     Game* m_Game;
 public: