diff --git a/contrib/less/NEWS b/contrib/less/NEWS
index 8dd4dec33b12..14997c253734 100644
--- a/contrib/less/NEWS
+++ b/contrib/less/NEWS
@@ -11,7 +11,7 @@
 
 ======================================================================
 
-	Major changes between "less" versions 487 and 529
+	Major changes between "less" versions 487 and 530
 
 * Don't output terminal init sequence if using -F and file fits on one screen.
 
diff --git a/contrib/less/README b/contrib/less/README
index d4d91658fe52..ea8ed232d551 100644
--- a/contrib/less/README
+++ b/contrib/less/README
@@ -7,9 +7,9 @@
 **************************************************************************
 **************************************************************************
 
-                            Less, version 529
+                            Less, version 530
 
-    This is the distribution of less, version 529, released 13 Nov 2017.
+    This is the distribution of less, version 530, released 05 Dec 2017.
     This program is part of the GNU project (http://www.gnu.org).
 
     This program is free software.  You may redistribute it and/or
diff --git a/contrib/less/command.c b/contrib/less/command.c
index 6439556f3e80..a2f18c1588ff 100644
--- a/contrib/less/command.c
+++ b/contrib/less/command.c
@@ -812,7 +812,7 @@ getcc_end_command()
  * (characters previously given to ungetcc or ungetsc).
  */
 	static LWCHAR
-getccu()
+getccu(VOID_PARAM)
 {
 	LWCHAR c;
 	if (ungot == NULL)
diff --git a/contrib/less/help.c b/contrib/less/help.c
index 1daad8cc55f0..efa236af89d9 100644
--- a/contrib/less/help.c
+++ b/contrib/less/help.c
@@ -1,4 +1,4 @@
-/* This file was generated by mkhelp.pl from less.hlp at 17:31 on 2017/11/13 */
+/* This file was generated by mkhelp.pl from less.hlp at 22:56 on 2017/12/5 */
 #include "less.h"
 constant char helpdata[] = {
 '\n',
diff --git a/contrib/less/less.nro b/contrib/less/less.nro
index 0b706c3f4f04..fa0b4ffff91b 100644
--- a/contrib/less/less.nro
+++ b/contrib/less/less.nro
@@ -1,4 +1,4 @@
-.TH LESS 1 "Version 529: 13 Nov 2017"
+.TH LESS 1 "Version 530: 05 Dec 2017"
 .SH NAME
 less \- opposite of more
 .SH SYNOPSIS
@@ -1199,6 +1199,8 @@ uses the original file, as normal.
 To use an input pipe,
 make the first character in the LESSOPEN environment variable a
 vertical bar (|) to signify that the input preprocessor is an input pipe.
+As with non-pipe input preprocessors, the command string must contain one
+occurrence of %s, which is replaced with the filename of the input file.
 .PP
 For example, on many Unix systems, this script will work like the
 previous example scripts:
diff --git a/contrib/less/lessecho.nro b/contrib/less/lessecho.nro
index 703ffe54a043..49a97fff163b 100644
--- a/contrib/less/lessecho.nro
+++ b/contrib/less/lessecho.nro
@@ -1,4 +1,4 @@
-.TH LESSECHO 1 "Version 529: 13 Nov 2017"
+.TH LESSECHO 1 "Version 530: 05 Dec 2017"
 .SH NAME
 lessecho \- expand metacharacters
 .SH SYNOPSIS
diff --git a/contrib/less/lesskey.nro b/contrib/less/lesskey.nro
index d7e059fbf813..ffe520be37a6 100644
--- a/contrib/less/lesskey.nro
+++ b/contrib/less/lesskey.nro
@@ -1,4 +1,4 @@
-.TH LESSKEY 1 "Version 529: 13 Nov 2017"
+.TH LESSKEY 1 "Version 530: 05 Dec 2017"
 .SH NAME
 lesskey \- specify key bindings for less
 .SH SYNOPSIS
diff --git a/contrib/less/version.c b/contrib/less/version.c
index d1e18d06a78c..1432b374e5ef 100644
--- a/contrib/less/version.c
+++ b/contrib/less/version.c
@@ -852,6 +852,7 @@ v526  10/25/17  Fix search hilite bug introduced in v517.
 v527  10/30/17  Fix search hilite bug on last page with -a.
 v528  11/3/17   Make second ESC-u clear status column.
 v529  11/12/17  Display Unicode formatting chars in hex if -U is set.
+v530  12/2/17   Minor doc change and add missing VOID_PARAM.
 */
 
-char version[] = "529";
+char version[] = "530";