diff --git a/nlsr.h b/nlsr.h
index 65500fa..1bfa8a1 100644
--- a/nlsr.h
+++ b/nlsr.h
@@ -42,6 +42,7 @@
 	struct hashtb *npl;
 	struct hashtb *pit_alsa;
 	struct hashtb *map;
+	struct hashtb *rev_map;
 	struct hashtb *npt;
 	struct hashtb *routing_table;