diff --git a/extra/ui/windows/windows.factor b/extra/ui/windows/windows.factor
index 290e4ef311..5fa078de89 100755
--- a/extra/ui/windows/windows.factor
+++ b/extra/ui/windows/windows.factor
@@ -381,7 +381,7 @@ M: windows-ui-backend (close-window)
     >r class-name-ptr get-global f r>
     >r >r >r ex-style r> r>
         WS_CLIPSIBLINGS WS_CLIPCHILDREN bitor style bitor
-        0 0 r>
+        CW_USEDEFAULT dup r>
     get-RECT-dimensions
     f f f GetModuleHandle f CreateWindowEx dup win32-error=0/f ;