diff --git a/doc/sphinx/toc/kiosk-shell.rst b/doc/sphinx/toc/kiosk-shell.rst
index dedf6a9c..37895d63 100644
--- a/doc/sphinx/toc/kiosk-shell.rst
+++ b/doc/sphinx/toc/kiosk-shell.rst
@@ -12,6 +12,13 @@ example:
     [output]
     name=screen0
     app-ids=org.domain.app1,com.domain.app2
+    x11-wm-name=xterm,Mozilla Firefox
+    x11-wm-class=Navigator
+
+Xwayland windows can be specified either using ``x11-wm-name=``, which matches
+the ``WM_NAME`` X11 property and ``x11-wm-class=``, which matches `WM_CLASS`
+one. If the Xwayland window has both a ``WM_CLASS`` or a ``WM_NAME`` set, then
+it will be checked in both ``x11-wm-name`` and in ``x11-wm-class`` list entry.
 
 To run weston with kiosk-shell set ``shell=kiosk-shell.so`` in weston.ini, or
 use the ``--shell=kiosk-shell.so`` command-line option.