diff --git a/src/hb-buffer.h b/src/hb-buffer.h
index 4ed458fbb..4c746f401 100644
--- a/src/hb-buffer.h
+++ b/src/hb-buffer.h
@@ -93,8 +93,7 @@ typedef struct hb_glyph_info_t
 typedef enum { /*< flags >*/
   HB_GLYPH_FLAG_UNSAFE_TO_BREAK		= 0x00000001,
 
-  /*< private >*/
-  HB_GLYPH_FLAG_DEFINED			= 0x00000001 /* OR of all defined flags */
+  HB_GLYPH_FLAG_DEFINED			= 0x00000001 /*< skip >*/ /* OR of all defined flags */
 } hb_glyph_flags_t;
 
 HB_EXTERN hb_glyph_flags_t