diff --git a/src/network/netdev/netdev.c b/src/network/netdev/netdev.c
index 55f24d0fbc..9b956ff66d 100644
--- a/src/network/netdev/netdev.c
+++ b/src/network/netdev/netdev.c
@@ -292,7 +292,7 @@ static int netdev_create_handler(sd_netlink *rtnl, sd_netlink_message *m, void *
         return 1;
 }
 
-int netdev_enslave(NetDev *netdev, Link *link, sd_netlink_message_handler_t callback) {
+static int netdev_enslave(NetDev *netdev, Link *link, sd_netlink_message_handler_t callback) {
         int r;
 
         assert(netdev);
diff --git a/src/network/netdev/netdev.h b/src/network/netdev/netdev.h
index 855eadf9d3..2c1a59f2c4 100644
--- a/src/network/netdev/netdev.h
+++ b/src/network/netdev/netdev.h
@@ -155,7 +155,6 @@ DEFINE_TRIVIAL_CLEANUP_FUNC(NetDev*, netdev_unref);
 
 int netdev_get(Manager *manager, const char *name, NetDev **ret);
 int netdev_set_ifindex(NetDev *netdev, sd_netlink_message *newlink);
-int netdev_enslave(NetDev *netdev, Link *link, sd_netlink_message_handler_t callback);
 int netdev_get_mac(const char *ifname, struct ether_addr **ret);
 int netdev_join(NetDev *netdev, Link *link, sd_netlink_message_handler_t cb);