1 files changed, 1 insertions, 0 deletions
diff --git a/options.h b/options.h
index 06ad69b..62038a4 100644
--- a/options.h
+++ b/options.h
@@ -20,6 +20,7 @@ typedef enum {
   MODE_HUE_SORT,
   MODE_RANDOM,
   MODE_MORTON,
+  MODE_HILBERT,
 } mode_t;
 
 // Possible pixel selection modes