diff --git a/include/rtdef.h b/include/rtdef.h
index f74d781cb1..6b2e9ecd28 100644
--- a/include/rtdef.h
+++ b/include/rtdef.h
@@ -1128,6 +1128,7 @@ enum
     RTGRAPHIC_PIXEL_FORMAT_BGR565 = RTGRAPHIC_PIXEL_FORMAT_RGB565P,
     RTGRAPHIC_PIXEL_FORMAT_RGB666,
     RTGRAPHIC_PIXEL_FORMAT_RGB888,
+    RTGRAPHIC_PIXEL_FORMAT_BGR888,
     RTGRAPHIC_PIXEL_FORMAT_ARGB888,
     RTGRAPHIC_PIXEL_FORMAT_ABGR888,
     RTGRAPHIC_PIXEL_FORMAT_RESERVED,