diff --git a/net/ipv4/route.c b/net/ipv4/route.c
index b88836e6b4a1e26e5c00b4d2650f7a7e9814a1fc..6810d2076b1baed40a466518347bf559f720a0fc 100644
--- a/net/ipv4/route.c
+++ b/net/ipv4/route.c
@@ -2236,7 +2236,7 @@ static struct rtable *__mkroute_output(const struct fib_result *res,
 	if (!rth)
 		return ERR_PTR(-ENOBUFS);
 
-	rth->rt_iif	= orig_oif ? : 0;
+	rth->rt_iif = orig_oif;
 	if (res->table)
 		rth->rt_table_id = res->table->tb_id;