diff --git a/legacy/evas/src/modules/engines/buffer/evas_engine.c b/legacy/evas/src/modules/engines/buffer/evas_engine.c
index f919c58da1..758ef10a7b 100644
--- a/legacy/evas/src/modules/engines/buffer/evas_engine.c
+++ b/legacy/evas/src/modules/engines/buffer/evas_engine.c
@@ -358,8 +358,9 @@ eng_output_redraws_next_update_push(void *data, void *surface, int x, int y, int
 }
 
 static void
-eng_output_flush(void *data __UNUSED__)
+eng_output_flush(void *data)
 {
+   Render_Engine *re = (Render_Engine *)data;
    evas_buffer_outbuf_buf_switch_buffer(re->ob);
 }