diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c
index 31a0b28e416763c4be52c90406742121b5ae05bc..a2bdefcd2b30e3c9068a317104d52db8d06c1663 100644
--- a/net/ipv6/addrconf.c
+++ b/net/ipv6/addrconf.c
@@ -314,9 +314,8 @@ static void addrconf_del_dad_work(struct inet6_ifaddr *ifp)
 static void addrconf_mod_rs_timer(struct inet6_dev *idev,
 				  unsigned long when)
 {
-	if (!timer_pending(&idev->rs_timer))
+	if (!mod_timer(&idev->rs_timer, jiffies + when))
 		in6_dev_hold(idev);
-	mod_timer(&idev->rs_timer, jiffies + when);
 }
 
 static void addrconf_mod_dad_work(struct inet6_ifaddr *ifp,