diff --git a/build/phaser.d.ts b/build/phaser.d.ts
index 1e00927e..9d7a6905 100644
--- a/build/phaser.d.ts
+++ b/build/phaser.d.ts
@@ -240,7 +240,7 @@ declare module Phaser {
         dump(full: boolean): void;
     }
 
-    class World {
+    class World extends Phaser.Group {
         constructor(game: Phaser.Game);
         game: Phaser.Game;
         bounds: Phaser.Rectangle;