diff --git a/libweston/compositor.c b/libweston/compositor.c
index 84fc97799..9437ff616 100644
--- a/libweston/compositor.c
+++ b/libweston/compositor.c
@@ -100,6 +100,7 @@
  * \defgroup head Head
  * \defgroup output Output
  * \defgroup compositor Compositor
+ * \defgroup client Wayland Clients
  */
 
 #define DEFAULT_REPAINT_WINDOW 7 /* milliseconds */