diff --git a/zebra/zebra_vty.c b/zebra/zebra_vty.c
index 8cf783341c..b204b30ca7 100644
--- a/zebra/zebra_vty.c
+++ b/zebra/zebra_vty.c
@@ -915,6 +915,7 @@ static void vty_show_ip_route(struct vty *vty, struct route_node *rn,
 
 		json_object_string_add(json_route, "prefix",
 				       srcdest_rnode2str(rn, buf, sizeof(buf)));
+		json_object_int_add(json_route, "prefixLen", rn->p.prefixlen);
 		json_object_string_add(json_route, "protocol",
 				       zebra_route_string(re->type));