diff --git a/lib/zebra.h b/lib/zebra.h
index b289a19..a4e0214 100644
--- a/lib/zebra.h
+++ b/lib/zebra.h
@@ -425,7 +425,8 @@
 #define ZEBRA_ROUTER_ID_DELETE            21
 #define ZEBRA_ROUTER_ID_UPDATE            22
 #define ZEBRA_HELLO                       23
-#define ZEBRA_MESSAGE_MAX                 24
+#define ZEBRA_IPV4_NEXTHOP_LOOKUP_MRIB    24
+#define ZEBRA_MESSAGE_MAX                 25
 
 /* Marker value used in new Zserv, in the byte location corresponding
  * the command value in the old zserv header. To allow old and new