diff --git a/rtos/Mail.h b/rtos/Mail.h
index c2cc32556f..9c9b4c68f0 100644
--- a/rtos/Mail.h
+++ b/rtos/Mail.h
@@ -156,13 +156,9 @@ public:
         return _pool.free(mptr);
     }
 
-#if !defined(DOXYGEN_ONLY)
-
 private:
     Queue<T, queue_sz> _queue;
     MemoryPool<T, queue_sz> _pool;
-
-#endif //!defined(DOXYGEN_ONLY)
 };
 
 /** @}*/