diff --git a/drivers/net/wan/hdlc_ppp.c b/drivers/net/wan/hdlc_ppp.c
index 7b8a5ea..72a7cda 100644
--- a/drivers/net/wan/hdlc_ppp.c
+++ b/drivers/net/wan/hdlc_ppp.c
@@ -150,11 +150,11 @@
 		return htons(ETH_P_HDLC);
 
 	switch (data->protocol) {
-	case __constant_htons(PID_IP):
+	case cpu_to_be16(PID_IP):
 		skb_pull(skb, sizeof(struct hdlc_header));
 		return htons(ETH_P_IP);
 
-	case __constant_htons(PID_IPV6):
+	case cpu_to_be16(PID_IPV6):
 		skb_pull(skb, sizeof(struct hdlc_header));
 		return htons(ETH_P_IPV6);