diff --git a/lib/libc/sys/kenv.2 b/lib/libc/sys/kenv.2
index cbda2168c857..9d8bd327cc5a 100644
--- a/lib/libc/sys/kenv.2
+++ b/lib/libc/sys/kenv.2
@@ -1,5 +1,5 @@
 .\"
-.\" Copyright (C) 2001 Chad David <davidc@FreeBSD.org>. All rights reserved.
+.\" Copyright (C) 2002 Chad David <davidc@FreeBSD.org>. All rights reserved.
 .\"
 .\" Redistribution and use in source and binary forms, with or without
 .\" modification, are permitted provided that the following conditions
@@ -49,10 +49,11 @@ the kernel environment.
 The
 .Fa action
 parameter can be one of the following:
-.Bl -tag -width ".Dv KENV_DUMP"
+.Bl -tag -width ".Dv KENV_UNSET"
 .It Dv KENV_GET
 Returns the value associated with the named kernel environment variable.
-If the variable is not found -1 is returned and
+If the variable is not found, \-1 is returned and
+the global variable
 .Va errno
 is set to
 .Er ENOENT .
@@ -61,11 +62,12 @@ Only the number of bytes available in
 are copied out.
 .It Dv KENV_SET
 Sets or adds a new kernel environment variable.
-This option is only avaiable to the superuser.
+This option is only available to the superuser.
 .It Dv KENV_UNSET
 Unsets the kernel environment variable
 .Fa name .
-If the variable does not exists -1 is returned and
+If the variable does not exist, \-1 is returned and
+the global variable
 .Va errno
 is set to
 .Er EINVAL .
@@ -100,7 +102,7 @@ should copy return data to in the case of
 .Dv KENV_DUMP
 and
 .Dv KENV_GET .
-If 
+If
 .Fa value
 is
 .Dv NULL
@@ -120,14 +122,15 @@ The
 function returns 0 if successful in the case of
 .Dv KENV_SET
 and
-.Dv KENV_UNSET,
+.Dv KENV_UNSET ,
 and the number of bytes copied into
 .Fa value
 in the case of
 .Dv KENV_DUMP
 and
 .Dv KENV_GET .
-If an error occurs, a value of -1 is returned and
+If an error occurs, a value of \-1 is returned and
+the global variable
 .Va errno
 is set to indicate the error.
 .Sh ERRORS
@@ -148,10 +151,10 @@ for a
 or
 .Dv KENV_UNSET .
 .It Bq Er EPERM
-a user other than the superuser attempted to set or unset an kernel
+a user other than the superuser attempted to set or unset a kernel
 environment variable.
 .It Bq Er EFAULT
-a bad address was encountered while attempting to copy in user arguments,
+bad address was encountered while attempting to copy in user arguments,
 or copy out value(s).
 .It Bq Er ENAMETOOLONG
 the name of a variable supplied by the user is longer than
@@ -166,7 +169,7 @@ or the value of a variable is longer than
 This man page was written by
 .An Chad David Aq davidc@FreeBSD.org .
 .Pp
-The 
+The
 .Fn kenv
 system call was written by
 .An Maxime Henrion Aq mux@FreeBSD.org .