diff --git a/net/ipv6/ip6_gre.c b/net/ipv6/ip6_gre.c
index 7bb5446b9d73c16a7f4096f2705ce60f997c7c2a..1ef1fa2b22a6a7bddfcd23856edd809f8bd97ab7 100644
--- a/net/ipv6/ip6_gre.c
+++ b/net/ipv6/ip6_gre.c
@@ -1173,9 +1173,8 @@ static int ip6gre_tunnel_ioctl(struct net_device *dev,
 
 static int ip6gre_tunnel_change_mtu(struct net_device *dev, int new_mtu)
 {
-	struct ip6_tnl *tunnel = netdev_priv(dev);
 	if (new_mtu < 68 ||
-	    new_mtu > 0xFFF8 - dev->hard_header_len - tunnel->hlen)
+	    new_mtu > 0xFFF8 - dev->hard_header_len)
 		return -EINVAL;
 	dev->mtu = new_mtu;
 	return 0;