diff --git a/nixos/modules/services/desktops/flatpak.xml b/nixos/modules/services/desktops/flatpak.xml
index fb27bd1f62b2..8f080b250228 100644
--- a/nixos/modules/services/desktops/flatpak.xml
+++ b/nixos/modules/services/desktops/flatpak.xml
@@ -29,7 +29,7 @@
   in other cases, you will need to add something like the following to your
   <filename>configuration.nix</filename>:
 <programlisting>
-  <xref linkend="opt-services.flatpak.extraPortals"/> = [ pkgs.xdg-desktop-portal-gtk ];
+  <xref linkend="opt-xdg.portal.extraPortals"/> = [ pkgs.xdg-desktop-portal-gtk ];
 </programlisting>
  </para>
  <para>