diff --git a/basis/ui/backend/x11/x11.factor b/basis/ui/backend/x11/x11.factor
index abbd2654be..7063a060db 100644
--- a/basis/ui/backend/x11/x11.factor
+++ b/basis/ui/backend/x11/x11.factor
@@ -416,3 +416,5 @@ x11-ui-backend ui-backend set-global
 
 M: x11-ui-backend ui-backend-available?
     "DISPLAY" os-env >boolean ;
+
+M: x11-ui-backend resize-window [ dpy get ] 2dip [ handle>> window>> ] [ first2 ] bi* XResizeWindow drop ;