diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c
index 9d89be7e0544..c90ee6dd7446 100644
--- a/net/ipv6/addrconf.c
+++ b/net/ipv6/addrconf.c
@@ -4874,7 +4874,7 @@ static int modify_prefix_route(struct net *net, struct inet6_ifaddr *ifp,
 			fib6_clean_expires(f6i);
 			fib6_may_remove_gc_list(net, f6i);
 		} else {
-			fib6_set_expires(f6i, expires);
+			fib6_set_expires(f6i, jiffies + clock_t_to_jiffies(expires));
 			fib6_add_gc_list(f6i);
 		}