diff --git a/sys/sys/tty.h b/sys/sys/tty.h
index 70946bce977..82109bdf7d8 100644
--- a/sys/sys/tty.h
+++ b/sys/sys/tty.h
@@ -75,9 +75,9 @@ struct tty {
 	long	t_outcc;		/* Output queue statistics. */
 	int	t_line;			/* Interface to device drivers. */
 	union {
-		dev_t t_kdev;		/* Device. */
-		udev_t t_udev;		/* Userland (sysctl) instance */
-		void *t_devp;		/* Keep user/kernel size in sync */
+		dev_t	t_kdev;		/* Device. */
+		udev_t	t_udev;		/* Userland (sysctl) instance. */
+		void	*t_devp;	/* Keep user/kernel size in sync. */
 	} ttyu;
 	int	t_state;		/* Device and driver (TS*) state. */
 	int	t_flags;		/* Tty flags. */
@@ -109,9 +109,9 @@ struct tty {
 	SLIST_ENTRY(tty) t_list;	/* Global chain of ttys for pstat(8) */
 };
 
-#define	t_dev		ttyu.t_kdev
 #define	t_cc		t_termios.c_cc
 #define	t_cflag		t_termios.c_cflag
+#define	t_dev		ttyu.t_kdev
 #define	t_iflag		t_termios.c_iflag
 #define	t_ispeed	t_termios.c_ispeed
 #define	t_lflag		t_termios.c_lflag