diff --git a/bin/domainname/domainname.1 b/bin/domainname/domainname.1
index 9254c765a85b..77e30c4dbb78 100644
--- a/bin/domainname/domainname.1
+++ b/bin/domainname/domainname.1
@@ -34,7 +34,7 @@
 .\"
 .Dd September 18, 1994
 .Dt DOMAINNAME 1
-.Os FreeBSD 2.0
+.Os FreeBSD
 .Sh NAME
 .Nm domainname
 .Nd set or print name of current YP/NIS domain
diff --git a/gnu/usr.bin/man/makewhatis/makewhatis.1 b/gnu/usr.bin/man/makewhatis/makewhatis.1
index 471b728ef367..b3489e8ff699 100644
--- a/gnu/usr.bin/man/makewhatis/makewhatis.1
+++ b/gnu/usr.bin/man/makewhatis/makewhatis.1
@@ -25,7 +25,7 @@
 .\" $FreeBSD$
 .Dd January 12, 1995
 .Dt MAKEWHATIS 1
-.Os FreeBSD 2.1
+.Os FreeBSD
 .Sh NAME
 .Nm makewhatis
 .Nd create whatis database
diff --git a/gnu/usr.bin/man/makewhatis/makewhatis.local.8 b/gnu/usr.bin/man/makewhatis/makewhatis.local.8
index 199d86124669..1bf8fc1ec374 100644
--- a/gnu/usr.bin/man/makewhatis/makewhatis.local.8
+++ b/gnu/usr.bin/man/makewhatis/makewhatis.local.8
@@ -25,7 +25,7 @@
 .\" $FreeBSD$
 .Dd April 26, 1996
 .Dt MAKEWHATIS.LOCAL 8
-.Os FreeBSD 2.2
+.Os FreeBSD
 .Sh NAME
 .Nm makewhatis.local , catman.local
 .Nd start makewhatis or catman for local file systems
diff --git a/usr.bin/makewhatis/makewhatis.local.8 b/usr.bin/makewhatis/makewhatis.local.8
index 199d86124669..1bf8fc1ec374 100644
--- a/usr.bin/makewhatis/makewhatis.local.8
+++ b/usr.bin/makewhatis/makewhatis.local.8
@@ -25,7 +25,7 @@
 .\" $FreeBSD$
 .Dd April 26, 1996
 .Dt MAKEWHATIS.LOCAL 8
-.Os FreeBSD 2.2
+.Os FreeBSD
 .Sh NAME
 .Nm makewhatis.local , catman.local
 .Nd start makewhatis or catman for local file systems