diff --git a/basis/ui/gadgets/worlds/worlds.factor b/basis/ui/gadgets/worlds/worlds.factor
index 05466f4673..bcdccb23cd 100644
--- a/basis/ui/gadgets/worlds/worlds.factor
+++ b/basis/ui/gadgets/worlds/worlds.factor
@@ -33,7 +33,8 @@ CONSTANT: default-world-window-controls
     }
 
 TUPLE: world < track
-    active? focused? grab-input?
+    active? focused? grab-input? fullscreen?
+    saved-position
     layers
     title status status-owner
     text-handle handle images