diff --git a/include/net/udp_tunnel.h b/include/net/udp_tunnel.h
index 29251c3519cf0..21ba0a25f9361 100644
--- a/include/net/udp_tunnel.h
+++ b/include/net/udp_tunnel.h
@@ -154,8 +154,9 @@ void udp_tunnel_xmit_skb(struct rtable *rt, struct sock *sk, struct sk_buff *skb
 
 int udp_tunnel6_xmit_skb(struct dst_entry *dst, struct sock *sk,
 			 struct sk_buff *skb,
-			 struct net_device *dev, struct in6_addr *saddr,
-			 struct in6_addr *daddr,
+			 struct net_device *dev,
+			 const struct in6_addr *saddr,
+			 const struct in6_addr *daddr,
 			 __u8 prio, __u8 ttl, __be32 label,
 			 __be16 src_port, __be16 dst_port, bool nocheck);
 
diff --git a/net/ipv6/ip6_udp_tunnel.c b/net/ipv6/ip6_udp_tunnel.c
index cdc4d4ee24206..70d38705c92fa 100644
--- a/net/ipv6/ip6_udp_tunnel.c
+++ b/net/ipv6/ip6_udp_tunnel.c
@@ -75,8 +75,9 @@ EXPORT_SYMBOL_GPL(udp_sock_create6);
 
 int udp_tunnel6_xmit_skb(struct dst_entry *dst, struct sock *sk,
 			 struct sk_buff *skb,
-			 struct net_device *dev, struct in6_addr *saddr,
-			 struct in6_addr *daddr,
+			 struct net_device *dev,
+			 const struct in6_addr *saddr,
+			 const struct in6_addr *daddr,
 			 __u8 prio, __u8 ttl, __be32 label,
 			 __be16 src_port, __be16 dst_port, bool nocheck)
 {