diff --git a/src/hb-config.hh b/src/hb-config.hh
index bda077ef3..d029ff843 100644
--- a/src/hb-config.hh
+++ b/src/hb-config.hh
@@ -84,6 +84,7 @@
 #define HB_NO_OT_SHAPE_FRACTIONS
 #define HB_NO_STYLE
 #define HB_NO_SUBSET_LAYOUT
+#define HB_NO_VERTICAL
 #define HB_NO_VAR
 #endif