diff --git a/target/linux/generic/files/include/linux/routerboot.h b/target/linux/generic/files/include/linux/routerboot.h
index 0244843d68..3cda858cf9 100644
--- a/target/linux/generic/files/include/linux/routerboot.h
+++ b/target/linux/generic/files/include/linux/routerboot.h
@@ -40,6 +40,7 @@
 #define RB_ID_HARD_12		12
 #define RB_ID_MEMORY_SIZE	13
 #define RB_ID_MAC_ADDRESS_COUNT	14
+#define RB_ID_HW_OPTIONS	21
 #define RB_ID_WLAN_DATA		22
 
 /*