diff --git a/src/compat/compat.h b/src/compat/compat.h
index 36e902b0..6fb156ff 100644
--- a/src/compat/compat.h
+++ b/src/compat/compat.h
@@ -1153,6 +1153,10 @@ static inline void dst_cache_reset_now(struct dst_cache *dst_cache)
 }
 #endif
 
+#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 3, 0)
+#define skb_valid_dst(a, b) skb_dst(a, b)
+#endif
+
 #if defined(ISUBUNTU1604) || defined(ISRHEL7)
 #include <linux/siphash.h>
 #ifndef _WG_LINUX_SIPHASH_H
diff --git a/src/device.c b/src/device.c
index ece4ad2d..062490f1 100644
--- a/src/device.c
+++ b/src/device.c
@@ -19,6 +19,7 @@
 #include <linux/if_arp.h>
 #include <linux/icmp.h>
 #include <linux/suspend.h>
+#include <net/dst_metadata.h>
 #include <net/icmp.h>
 #include <net/rtnetlink.h>
 #include <net/ip_tunnels.h>
@@ -160,7 +161,7 @@ static netdev_tx_t wg_xmit(struct sk_buff *skb, struct net_device *dev)
 		goto err_peer;
 	}
 
-	mtu = skb_dst(skb) ? dst_mtu(skb_dst(skb)) : dev->mtu;
+	mtu = skb_valid_dst(skb) ? dst_mtu(skb_dst(skb)) : dev->mtu;
 
 	__skb_queue_head_init(&packets);
 	if (!skb_is_gso(skb)) {