diff --git a/sys/sys/socket.h b/sys/sys/socket.h
index 3a59bdc37a8..b71e206c61c 100644
--- a/sys/sys/socket.h
+++ b/sys/sys/socket.h
@@ -166,8 +166,8 @@ struct sockproto {
  */
 #define	_SS_MAXSIZE	128
 #define	_SS_ALIGNSIZE	(sizeof(int64_t))
-#define	_SS_PAD1SIZE	(_SS_ALIGNSIZE - sizeof(u_char) * 2)
-#define	_SS_PAD2SIZE	(_SS_MAXSIZE - sizeof(u_char) * 2 - \
+#define	_SS_PAD1SIZE	(_SS_ALIGNSIZE - sizeof(u_char) - sizeof(sa_family_t))
+#define	_SS_PAD2SIZE	(_SS_MAXSIZE - sizeof(u_char) - sizeof(sa_family_t) - \
 				_SS_PAD1SIZE - _SS_ALIGNSIZE)
 
 struct sockaddr_storage {