diff --git a/drivers/staging/gdm724x/netlink_k.c b/drivers/staging/gdm724x/netlink_k.c
index 7902e52a699b..8f39cc5617aa 100644
--- a/drivers/staging/gdm724x/netlink_k.c
+++ b/drivers/staging/gdm724x/netlink_k.c
@@ -19,8 +19,8 @@ static DEFINE_MUTEX(netlink_mutex);
 #define ND_NLMSG_SPACE(len)	(NLMSG_SPACE(len) + ND_IFINDEX_LEN)
 #define ND_NLMSG_DATA(nlh)	((void *)((char *)NLMSG_DATA(nlh) + \
 						  ND_IFINDEX_LEN))
-#define ND_NLMSG_S_LEN(len)	(len + ND_IFINDEX_LEN)
-#define ND_NLMSG_R_LEN(nlh)	(nlh->nlmsg_len - ND_IFINDEX_LEN)
+#define ND_NLMSG_S_LEN(len)	((len) + ND_IFINDEX_LEN)
+#define ND_NLMSG_R_LEN(nlh)	((nlh)->nlmsg_len - ND_IFINDEX_LEN)
 #define ND_NLMSG_IFIDX(nlh)	NLMSG_DATA(nlh)
 #define ND_MAX_MSG_LEN		(1024 * 32)