diff --git a/src/lib/evas/canvas/evas_out.c b/src/lib/evas/canvas/evas_out.c
index 190d0939b4..01e6bdeeb2 100644
--- a/src/lib/evas/canvas/evas_out.c
+++ b/src/lib/evas/canvas/evas_out.c
@@ -108,12 +108,12 @@ _efl_canvas_output_engine_info_get(Eo *eo_e EINA_UNUSED, Efl_Canvas_Output_Data
 }
 
 static Eina_Bool
-_efl_canvas_output_lock(Eo *obj, Efl_Canvas_Output_Data *pd)
+_efl_canvas_output_lock(Eo *obj EINA_UNUSED, Efl_Canvas_Output_Data *pd EINA_UNUSED)
 {
 }
 
 static Eina_Bool
-_efl_canvas_output_unlock(Eo *obj, Efl_Canvas_Output_Data *pd)
+_efl_canvas_output_unlock(Eo *obj EINA_UNUSED, Efl_Canvas_Output_Data *pd EINA_UNUSED)
 {
 }