diff --git a/model/sync-state-leaf-container.h b/model/sync-state-leaf-container.h
index 2c7e8b9..98adb1b 100644
--- a/model/sync-state-leaf-container.h
+++ b/model/sync-state-leaf-container.h
@@ -48,8 +48,10 @@
   }
 };
 
+/// @cond include_hidden 
 struct hashed { };
 struct ordered { };
+/// @endcond
 
 /**
  * \ingroup sync