diff --git a/man4/tty_ioctl.4 b/man4/tty_ioctl.4
index 0199dbdfa..2a5621e1f 100644
--- a/man4/tty_ioctl.4
+++ b/man4/tty_ioctl.4
@@ -215,7 +215,7 @@ Redirect output that would have gone to
 or
 .I /dev/tty0
 to the given tty.
-If that was a pseudoterminal master, send it to the slave.
+If that was a pseudo-terminal master, send it to the slave.
 In Linux before version 2.6.10,
 anybody can do this as long as the output was not redirected yet;
 since version 2.6.10, only root (a process with the
@@ -274,7 +274,7 @@ Set the foreground process group ID of this tty.
 Get the session ID of the given tty.
 This will fail with
 .B ENOTTY
-in case the tty is not a master pseudoterminal and not our controlling tty.
+in case the tty is not a master pseudo-terminal and not our controlling tty.
 Strange.
 .SS "Exclusive mode"
 .TP
@@ -298,7 +298,7 @@ Get the line discipline of the tty.
 .TP
 .BI "TIOCSETD	const int *" argp
 Set the line discipline of the tty.
-.SS "Pseudo-tty ioctls"
+.SS "Pseudo-terminal ioctls"
 .TP
 .BI "TIOCPKT	const int *" argp
 Enable (when
@@ -311,7 +311,7 @@ In packet mode, each subsequent
 .BR read (2)
 will return a packet that either contains a single non-zero control byte,
 or has a single byte containing zero (\(aq\0\(aq) followed by data
-written on the slave side of the pseudoterminal.
+written on the slave side of the pseudo-terminal.
 If the first byte is not
 .B TIOCPKT_DATA
 (0), it is an OR of one