diff --git a/extra/4DNav/4DNav.factor b/extra/4DNav/4DNav.factor
index 8ddbff96d9..f6c00154bb 100755
--- a/extra/4DNav/4DNav.factor
+++ b/extra/4DNav/4DNav.factor
@@ -37,6 +37,7 @@ ui.gadgets.panes
        ui.gadgets.buttons
        ui.gadgets.packs
        ui.gadgets.grids
+       ui.gadgets.corners
        ui.gestures
        ui.gadgets.scrollers
 splitting
@@ -187,8 +188,6 @@ VAR: present-space
 ! menu
 ! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
 
-USE: ui.gadgets.labeled.private
-
 : menu-rotations-4D ( -- gadget )
     3 3 <frame>
         { 1 1 } >>filled-cell
diff --git a/extra/4DNav/summary.txt b/extra/4DNav/summary.txt
index 5b5a452cde..2598a14429 100755
--- a/extra/4DNav/summary.txt
+++ b/extra/4DNav/summary.txt
@@ -1 +1 @@
-4DNav : simmple tool to navigate thru a 4D space view as projections on 4 3D spaces.
\ No newline at end of file
+Simple tool to navigate through a 4D space with projections on 4 3D spaces