diff --git a/drivers/net/caif/caif_serial.c b/drivers/net/caif/caif_serial.c
index d737ceb612031..bcc14c5875bf0 100644
--- a/drivers/net/caif/caif_serial.c
+++ b/drivers/net/caif/caif_serial.c
@@ -266,7 +266,7 @@ static int handle_tx(struct ser_device *ser)
 	return tty_wr;
 }
 
-static int caif_xmit(struct sk_buff *skb, struct net_device *dev)
+static netdev_tx_t caif_xmit(struct sk_buff *skb, struct net_device *dev)
 {
 	struct ser_device *ser;