--- a/ui/win32/window.c	Wed Jul 15 20:03:33 2026 +0200
+++ b/ui/win32/window.c	Tue Jul 21 16:46:44 2026 +0200
@@ -105,7 +105,7 @@
 
     UpdateWindow(hwnd);
 
-    UiContainerX *container = ui_box_container_create(obj, hwnd, UI_BOX_VERTICAL, 0, INSETS_ZERO);
+    UiContainer *container = ui_box_container_create(obj, hwnd, UI_BOX_VERTICAL, 0, INSETS_ZERO);
     uic_object_push_container(obj, container);
     UiBoxContainer *box = (UiBoxContainer*)container;