diff --git a/src/corelib/global/qnamespace.h b/src/corelib/global/qnamespace.h
index 1569577b129..9a0aa72bb5d 100644
--- a/src/corelib/global/qnamespace.h
+++ b/src/corelib/global/qnamespace.h
@@ -462,7 +462,7 @@ namespace Qt {
         AA_DisableShaderDiskCache = 27,
         AA_DontShowShortcutsInContextMenus = 28,
         AA_CompressTabletEvents = 29,
-        AA_DontUsePopupWindows = 30,
+        // AA_DisableWindowContextHelpButton = 30, (in Qt 5)
         AA_DisableSessionManager = 31,
 
         // Add new attributes before this line
diff --git a/src/corelib/global/qnamespace.qdoc b/src/corelib/global/qnamespace.qdoc
index a4da31211d8..6644ae8e136 100644
--- a/src/corelib/global/qnamespace.qdoc
+++ b/src/corelib/global/qnamespace.qdoc
@@ -279,11 +279,6 @@
            level windows, unless required by the implementation.
            This value was added in Qt 6.8.
 
-    \value AA_DontUsePopupWindows When this attribute is set, popups will always appear
-           as items in the scene, rather than having their own dedicated windows.
-           Setting this attribute will only affect Qt Quick applications.
-           This value was added in Qt 6.8.
-
     \omitvalue AA_AttributeCount
     \omitvalue AA_EnableHighDpiScaling
     \omitvalue AA_UseHighDpiPixmaps