diff --git a/lib/routemap.h b/lib/routemap.h
index 22a2b19..072526a 100644
--- a/lib/routemap.h
+++ b/lib/routemap.h
@@ -108,6 +108,7 @@
 struct route_map_index
 {
   struct route_map *map;
+  char *description;
 
   /* Preference of this route map rule. */
   int pref;