diff --git a/lib/route-table.c b/lib/route-table.c
index 6df7237e10a..e8f0623fa58 100644
--- a/lib/route-table.c
+++ b/lib/route-table.c
@@ -84,7 +84,7 @@ static bool route_table_valid = false;
 
 static void route_table_reset(void);
 static void route_table_handle_msg(const struct route_table_msg *);
-static int route_table_parse(struct ofpbuf *, struct route_table_msg *);
+static int route_table_parse(struct ofpbuf *, void *change);
 static void route_table_change(const struct route_table_msg *, void *);
 static void route_map_clear(void);
 
@@ -109,8 +109,7 @@ route_table_init(void)
     ovs_assert(!route6_notifier);
 
     ovs_router_init();
-    nln = nln_create(NETLINK_ROUTE, (nln_parse_func *) route_table_parse,
-                     &rtmsg);
+    nln = nln_create(NETLINK_ROUTE, route_table_parse, &rtmsg);
 
     route_notifier =
         nln_notifier_create(nln, RTNLGRP_IPV4_ROUTE,
@@ -222,8 +221,9 @@ route_table_reset(void)
 /* Return RTNLGRP_IPV4_ROUTE or RTNLGRP_IPV6_ROUTE on success, 0 on parse
  * error. */
 static int
-route_table_parse(struct ofpbuf *buf, struct route_table_msg *change)
+route_table_parse(struct ofpbuf *buf, void *change_)
 {
+    struct route_table_msg *change = change_;
     bool parsed, ipv4 = false;
 
     static const struct nl_policy policy[] = {