diff --git a/src/hb-subset.h b/src/hb-subset.h
index bc6540d9b..32664156f 100644
--- a/src/hb-subset.h
+++ b/src/hb-subset.h
@@ -95,11 +95,14 @@ typedef enum { /*< flags >*/
  * Since: REPLACE
  **/
 typedef enum { /*< flags >*/
-  HB_SUBSET_SETS_LAYOUT_FEATURE_TAG = 0,
+  HB_SUBSET_SETS_UNICODE_CODEPOINT = 0,
+  HB_SUBSET_SETS_GLYPH_INDEX,
+  HB_SUBSET_SETS_LAYOUT_FEATURE_TAG,
   HB_SUBSET_SETS_NAME_INDEX,
   HB_SUBSET_SETS_NAME_LANG_INDEX,
   HB_SUBSET_SETS_NO_SUBSET_TABLE_TAG,
   HB_SUBSET_SETS_DROP_TABLE_TAG,
+  HB_SUBSET_SETS_COUNT
 } hb_subset_sets_t;
 
 HB_EXTERN hb_subset_input_t *