diff --git a/include/uapi/linux/rtnetlink.h b/include/uapi/linux/rtnetlink.h
index eb0f1a554d7ba19c95b73315374c34757ba3ec97..9c9b8b4480cd4608d783318b7dbac4c060db210a 100644
--- a/include/uapi/linux/rtnetlink.h
+++ b/include/uapi/linux/rtnetlink.h
@@ -235,6 +235,7 @@ enum {
 #define RTPROT_NTK	15	/* Netsukuku */
 #define RTPROT_DHCP	16      /* DHCP client */
 #define RTPROT_MROUTED	17      /* Multicast daemon */
+#define RTPROT_BABEL	42      /* Babel daemon */
 
 /* rtm_scope