diff --git a/bgpd/bgp_mplsvpn.h b/bgpd/bgp_mplsvpn.h
index 3299b9c..b89b6d8 100644
--- a/bgpd/bgp_mplsvpn.h
+++ b/bgpd/bgp_mplsvpn.h
@@ -43,6 +43,7 @@
 
 extern void bgp_mplsvpn_init (void);
 extern int bgp_nlri_parse_vpn (struct peer *, struct attr *, struct bgp_nlri *);
+extern int bgp_nlri_sanity_check_vpn (struct peer *, struct bgp_nlri *);
 extern u_int32_t decode_label (u_char *);
 extern int str2prefix_rd (const char *, struct prefix_rd *);
 extern int str2tag (const char *, u_char *);