diff --git a/net/xfrm/xfrm_interface.c b/net/xfrm/xfrm_interface.c
index 23e51c094328..1e645795c30a 100644
--- a/net/xfrm/xfrm_interface.c
+++ b/net/xfrm/xfrm_interface.c
@@ -702,7 +702,7 @@ nla_put_failure:
 	return -EMSGSIZE;
 }
 
-struct net *xfrmi_get_link_net(const struct net_device *dev)
+static struct net *xfrmi_get_link_net(const struct net_device *dev)
 {
 	struct xfrm_if *xi = netdev_priv(dev);