diff --git a/docs/reference/gdk/meson.build b/docs/reference/gdk/meson.build
index 2037531241..6fe95a5e4a 100644
--- a/docs/reference/gdk/meson.build
+++ b/docs/reference/gdk/meson.build
@@ -1,16 +1,15 @@
 private_headers = [
-  'gdkintl.h',
-  'gdkmarshalers.h',
-  'gdkkeysyms.h',
-  'gdkinternals.h',
+  'gdk-autocleanup.h',
   'gdk-private.h',
   'gdkapplaunchcontextprivate.h',
+  'gdkcairocontextprivate.h',
+  'gdkcairoprivate.h',
   'gdkclipboardprivate.h',
   'gdkcontentformatsprivate.h',
   'gdkcontentproviderprivate.h',
   'gdkcursorprivate.h',
-  'gdkdeviceprivate.h',
   'gdkdevicepadprivate.h',
+  'gdkdeviceprivate.h',
   'gdkdevicetoolprivate.h',
   'gdkdisplaymanagerprivate.h',
   'gdkdisplayprivate.h',
@@ -24,12 +23,17 @@ private_headers = [
   'gdkframeclockprivate.h',
   'gdkglcontextprivate.h',
   'gdkgltextureprivate.h',
+  'gdkinternals.h',
+  'gdkintl.h',
   'gdkkeysprivate.h',
-  'gdkmonitorprivate.h',
+  'gdkkeysyms.h',
+  'gdkmarshalers.h',
   'gdkmemorytextureprivate.h',
+  'gdkmonitorprivate.h',
   'gdkpipeiostreamprivate.h',
   'gdkpopupprivate.h',
   'gdkprofilerprivate.h',
+  'gdkrgbaprivate.h',
   'gdkscreenprivate.h',
   'gdkseatdefaultprivate.h',
   'gdkseatprivate.h',
@@ -41,8 +45,43 @@ private_headers = [
   'gdktoplevelsizeprivate.h',
   'gdkvulkancontextprivate.h',
   'keyname-table.h',
-  'x11/gdkprivate-x11.h',
-  'x11/gdkeventsource.h',
+
+  # gdk/x11
+  'gdkcairocontext-x11.h',
+  'gdkclipboard-x11.h',
+  'gdkdevice-xi2-private.h',
+  'gdkdevicemanagerprivate-core.h',
+  'gdkdisplay-x11.h',
+  'gdkeventsource.h',
+  'gdkeventtranslator.h',
+  'gdkglcontext-x11.h',
+  'gdkkeys-x11.h',
+  'gdkmonitor-x11.h',
+  'gdkprivate-x11.h',
+  'gdkscreen-x11.h',
+  'gdkselectioninputstream-x11.h',
+  'gdkselectionoutputstream-x11.h',
+  'gdksurface-x11.h',
+  'gdktextlistconverter-x11.h',
+  'gdkvisual-x11.h',
+  'gdkvulkancontext-x11.h',
+  'gdkx-autocleanups.h',
+  'MwmUtil.h',
+  'xsettings-client.h',
+
+  # gdk/wayland
+  'gdkcairocontext-wayland.h',
+  'gdkclipboard-wayland.h',
+  'gdkdevice-wayland-private.h',
+  'gdkdisplay-wayland.h',
+  'gdkglcontext-wayland.h',
+  'gdkmonitor-wayland.h',
+  'gdkprimary-wayland.h',
+  'gdkprivate-wayland.h',
+  'gdkseat-wayland.h',
+  'gdksurface-wayland.h',
+  'gdkvulkancontext-wayland.h',
+  'wm-button-layout-translation.h',
   'gtk-primary-selection-client-protocol.h',
   'gtk-shell-client-protocol.h',
   'idle-inhibit-unstable-v1-client-protocol.h',
@@ -56,10 +95,10 @@ private_headers = [
   'xdg-output-unstable-v1-client-protocol.h',
   'xdg-shell-client-protocol.h',
   'xdg-shell-unstable-v6-client-protocol.h',
-  'win32',
-  'quartz',
+
   'broadway',
-  'mir'
+  'macos',
+  'win32',
 ]
 
 images = [
@@ -123,6 +162,9 @@ if get_option('gtk_doc')
                  '--ignore-decorators=_GDK_EXTERN|G_GNUC_WARN_UNUSED_RESULT',
                  '--ignore-headers=' + ' '.join(private_headers),
                ],
+               mkdb_args: [
+                 '--ignore-files=' + ' '.join(private_headers),
+               ],
                fixxref_args: [
                  '--html-dir=@0@'.format(docpath),
                  '--extra-dir=@0@'.format(join_paths(glib_docpath, 'glib')),