diff --git a/man4/lp.4 b/man4/lp.4
index abf7a26e7..68830fb11 100644
--- a/man4/lp.4
+++ b/man4/lp.4
@@ -85,7 +85,9 @@ This is used for both the polling and the interrupt driver.
 This
 .BR ioctl (2)
 requires superuser privileges.
-It takes an int containing the new IRQ as argument.
+It takes an
+.I int
+containing the new IRQ as argument.
 As a side effect, the printer will be reset.
 When \fIarg\fP is 0, the polling driver will be used, which is also default.
 .IP "\fBint ioctl(int \fP\fIfd\fP\fB, LPGETIRQ, int *\fP\fIarg\fP\fB)\fP"
diff --git a/man4/tty_ioctl.4 b/man4/tty_ioctl.4
index 442f55259..e22f006d2 100644
--- a/man4/tty_ioctl.4
+++ b/man4/tty_ioctl.4
@@ -392,7 +392,9 @@ ioctl, see
 .B "#include <linux/tty.h>"
 .TP
 .BI "TIOCTTYGSTRUCT	struct tty_struct *" argp
-Get the tty_struct corresponding to
+Get the
+.I tty_struct
+corresponding to
 .IR fd .
 .\"
 .\" .SS "Serial info"
diff --git a/man5/group.5 b/man5/group.5
index a11926954..16b6aa9c6 100644
--- a/man5/group.5
+++ b/man5/group.5
@@ -48,7 +48,9 @@ all the group member's user names, separated by commas.
 .SH BUGS
 As the 4.2BSD
 .BR initgroups (3)
-man page says: No-one seems to keep /etc/group up-to-date.
+man page says: No-one seems to keep
+.I /etc/group
+up-to-date.
 .SH "SEE ALSO"
 .BR login (1),
 .BR newgrp (1),