diff --git a/toys.h b/toys.h
index b7acc27..caf9612 100644
--- a/toys.h
+++ b/toys.h
@@ -64,6 +64,7 @@
 #define OLDTOY(name, oldname, opts, flags)
 #include "generated/newtoys.h"
 #include "generated/oldtoys.h"
+#include "generated/flags.h"
 #include "generated/globals.h"
 
 // These live in main.c