diff --git a/[refs] b/[refs]
index cbdd660bd26e..98edc3d126a2 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: abaa72d7fd9a20a67b62e6afa0e746e27851dc33
+refs/heads/master: f31fd383821555cbd77ee83e17837f7060825395
diff --git a/trunk/net/ipv4/route.c b/trunk/net/ipv4/route.c
index 89e39dc5336b..9f7ffbe201c9 100644
--- a/trunk/net/ipv4/route.c
+++ b/trunk/net/ipv4/route.c
@@ -1926,7 +1926,7 @@ static void rt_bind_exception(struct rtable *rt, struct fib_nh *nh, __be32 daddr
 		if (daddr != fnhe_daddr)
 			continue;
 		if (pmtu) {
-			unsigned long diff = jiffies - expires;
+			unsigned long diff = expires - jiffies;
 
 			if (time_before(jiffies, expires)) {
 				rt->rt_pmtu = pmtu;