diff --git a/src/lib/ecore_x/Ecore_X.h b/src/lib/ecore_x/Ecore_X.h
index 2b19e93a07..2938784c10 100644
--- a/src/lib/ecore_x/Ecore_X.h
+++ b/src/lib/ecore_x/Ecore_X.h
@@ -559,7 +559,7 @@ struct _Ecore_X_Event_Window_Hide
    Ecore_X_Window win;
    Ecore_X_Window event_win;
    Ecore_X_Time   time;
-   Eina_Bool      send_event : 1;
+   Eina_Bool      send_event : 1; /**< @since 1.8 */
 };
 
 struct _Ecore_X_Event_Window_Show