diff --git a/src/hb.h b/src/hb.h
index 7402034f4..e55decfea 100644
--- a/src/hb.h
+++ b/src/hb.h
@@ -41,6 +41,7 @@
 #include "hb-set.h"
 #include "hb-shape.h"
 #include "hb-shape-plan.h"
+#include "hb-subset.h"
 #include "hb-unicode.h"
 #include "hb-version.h"