diff --git a/src/corelib/global/qnamespace.h b/src/corelib/global/qnamespace.h
index b6f12a625f3..bd9786ec3ad 100644
--- a/src/corelib/global/qnamespace.h
+++ b/src/corelib/global/qnamespace.h
@@ -422,7 +422,7 @@ namespace Qt {
     enum ApplicationAttribute
     {
         // AA_ImmediateWidgetCreation = 0,
-        // AA_MSWindowsUseDirect3DByDefault = 1,
+        AA_QtQuickDontUseDefaultSizePolicy = 1,
         AA_DontShowIconsInMenus = 2,
         AA_NativeWindows = 3,
         AA_DontCreateNativeWidgetSiblings = 4,
diff --git a/src/corelib/global/qnamespace.qdoc b/src/corelib/global/qnamespace.qdoc
index 30a0c05cc49..2d3f9749fbd 100644
--- a/src/corelib/global/qnamespace.qdoc
+++ b/src/corelib/global/qnamespace.qdoc
@@ -84,6 +84,11 @@
     QCoreApplication::testAttribute().
 
 
+    \value [since 6.7] AA_QtQuickDontUseDefaultSizePolicy Qt Quick Layouts won't use the built-in
+           size policy of \l Item. This restores previous behavior where all items were fixed size
+           by default. Size policy can be customized by explicitly setting
+           \l{Layout::fillWidth}{Layout.fillWidth} or \l{Layout::fillHeight}{Layout.fillHeight}.
+
     \value AA_DontShowIconsInMenus Actions with the Icon property won't be
            shown in any menus unless specifically set by the
            QAction::iconVisibleInMenu property.