diff --git a/libexec/makekey/makekey.8 b/libexec/makekey/makekey.8
index 94f35430ba3..15d8e154e20 100644
--- a/libexec/makekey/makekey.8
+++ b/libexec/makekey/makekey.8
@@ -55,4 +55,5 @@ and how the encrypted value is calculated.
 .Sh HISTORY
 A
 .Nm
-command appeared in Version 7 AT&T UNIX.
+command appeared in
+.At v7 .
diff --git a/sbin/dump/dump.8 b/sbin/dump/dump.8
index 2176fe381cb..3eb067b1e37 100644
--- a/sbin/dump/dump.8
+++ b/sbin/dump/dump.8
@@ -350,4 +350,5 @@ for the operator running
 .Sh HISTORY
 A
 .Nm dump
-command appeared in Version 6 AT&T UNIX.
+command appeared in
+.At v6 .
diff --git a/sbin/mknod/mknod.8 b/sbin/mknod/mknod.8
index bbfd073c812..b825e7ca165 100644
--- a/sbin/mknod/mknod.8
+++ b/sbin/mknod/mknod.8
@@ -104,4 +104,5 @@ will cause the number to be interpreted as octal.
 .Sh HISTORY
 A
 .Nm
-command appeared in Version 6 AT&T UNIX.
+command appeared in
+.At v6 .
diff --git a/usr.bin/cal/cal.1 b/usr.bin/cal/cal.1
index 80d95b27d88..5ff574ce19e 100644
--- a/usr.bin/cal/cal.1
+++ b/usr.bin/cal/cal.1
@@ -78,4 +78,5 @@ calendar for that month is a bit unusual.
 .Sh HISTORY
 A
 .Nm
-command appeared in Version 6 AT&T UNIX.
+command appeared in
+.At v6 .
diff --git a/usr.bin/calendar/calendar.1 b/usr.bin/calendar/calendar.1
index 066fb8ac3bf..acc46acb736 100644
--- a/usr.bin/calendar/calendar.1
+++ b/usr.bin/calendar/calendar.1
@@ -231,7 +231,8 @@ at the beginning of a line.
 .Sh HISTORY
 A
 .Nm
-command appeared in Version 7 AT&T UNIX.
+command appeared in
+.At v7 .
 
 .Sh BUGS
 .Nm Calendar
diff --git a/usr.bin/col/col.1 b/usr.bin/col/col.1
index 2a55ef2c925..99ecda549c1 100644
--- a/usr.bin/col/col.1
+++ b/usr.bin/col/col.1
@@ -123,4 +123,5 @@ will display a warning message.
 A
 .Nm col
 command
-appeared in Version 6 AT&T UNIX.
+appeared in
+.At v6 .
diff --git a/usr.bin/look/look.1 b/usr.bin/look/look.1
index 3d8a247c86d..be6f666c444 100644
--- a/usr.bin/look/look.1
+++ b/usr.bin/look/look.1
@@ -101,4 +101,5 @@ This was incorrect and the current man page matches the historic
 implementation.
 .Sh HISTORY
 .Nm Look
-appeared in Version 7 AT&T Unix.
+appeared in
+.At v7 .
diff --git a/usr.bin/size/size.1 b/usr.bin/size/size.1
index 5f3b2fa9dfa..ee46bb285da 100644
--- a/usr.bin/size/size.1
+++ b/usr.bin/size/size.1
@@ -57,4 +57,5 @@ attempts to report on the file
 .Sh HISTORY
 A
 .Nm size
-command appeared in Version 6 AT&T Unix.
+command appeared in
+.At v6 .
diff --git a/usr.bin/size/size.1aout b/usr.bin/size/size.1aout
index 5f3b2fa9dfa..ee46bb285da 100644
--- a/usr.bin/size/size.1aout
+++ b/usr.bin/size/size.1aout
@@ -57,4 +57,5 @@ attempts to report on the file
 .Sh HISTORY
 A
 .Nm size
-command appeared in Version 6 AT&T Unix.
+command appeared in
+.At v6 .