diff --git a/lib/libc/gen/msgctl.3 b/lib/libc/gen/msgctl.3
index 79787255395c..ddd827cb1de7 100644
--- a/lib/libc/gen/msgctl.3
+++ b/lib/libc/gen/msgctl.3
@@ -31,7 +31,7 @@
 .\"
 .\" $FreeBSD$
 .\"/
-.Dd November 24, 1997
+.Dd April 3, 2008
 .Dt MSGCTL 3
 .Os
 .Sh NAME
@@ -65,9 +65,9 @@ struct msqid_ds {
 	struct	ipc_perm msg_perm;	/* msg queue permission bits */
 	struct	msg *msg_first;	/* first message in the queue */
 	struct	msg *msg_last;	/* last message in the queue */
-	u_long	msg_cbytes;	/* number of bytes in use on the queue */
-	u_long	msg_qnum;	/* number of msgs in the queue */
-	u_long	msg_qbytes;	/* max # of bytes on the queue */
+	msglen_t msg_cbytes;	/* number of bytes in use on the queue */
+	msgqnum_t msg_qnum;	/* number of msgs in the queue */
+	msglen_t msg_qbytes;	/* max # of bytes on the queue */
 	pid_t	msg_lspid;	/* pid of last msgsnd() */
 	pid_t	msg_lrpid;	/* pid of last msgrcv() */
 	time_t	msg_stime;	/* time of last msgsnd() */
@@ -89,13 +89,13 @@ structure is defined in
 and looks like this:
 .Bd -literal
 struct ipc_perm {
-	ushort	cuid;	/* creator user id */
-	ushort	cgid;	/* creator group id */
-	ushort	uid;	/* user id */
-	ushort	gid;	/* group id */
-	ushort	mode;	/* r/w permission */
-	ushort	seq;	/* sequence # (to generate unique msg/sem/shm id) */
-	key_t	key;	/* user specified msg/sem/shm key */
+	unsigned short	cuid;	/* creator user id */
+	unsigned short	cgid;	/* creator group id */
+	unsigned short	uid;	/* user id */
+	unsigned short	gid;	/* group id */
+	unsigned short	mode;	/* r/w permission */
+	unsigned short	seq;	/* sequence # (to generate unique ipcid) */
+	key_t		key;	/* user specified msg/sem/shm key */
 };
 .Ed
 .Pp