diff --git a/win32ss/user/user32/windows/window.c b/win32ss/user/user32/windows/window.c
index bb42e4de4af..1f8f5ca4cfb 100644
--- a/win32ss/user/user32/windows/window.c
+++ b/win32ss/user/user32/windows/window.c
@@ -129,7 +129,7 @@ CloseWindow(HWND hWnd)
 {
     PostMessageW(hWnd, WM_SYSCOMMAND, SC_MINIMIZE, 0);
 
-    return ValidateHwnd(hWndParent) != NULL;
+    return ValidateHwnd(hWnd) != NULL;
 }
 
 FORCEINLINE