diff --color -ur a/configure.ac b/configure.ac
--- a/configure.ac	2021-01-18 12:39:19.556844678 +0100
+++ b/configure.ac	2021-01-18 17:26:47.989410501 +0100
@@ -167,18 +167,7 @@
 AM_GLIB_GNU_GETTEXT
 AC_DEFINE_UNQUOTED(GETTEXT_PACKAGE,"$GETTEXT_PACKAGE", [Gettext package.])
 
-if test x"$enable_man" = x"yes"; then
-	AC_PATH_PROG([XSLTPROC], [xsltproc])
-	if test -z "$XSLTPROC"; then
-		enable_man=no
-	fi
-
-	dnl check for DocBook DTD and stylesheets in the local catalog.
-	JH_CHECK_XML_CATALOG([-//OASIS//DTD DocBook XML V4.1.2//EN],
-		[DocBook XML DTD V4.1.2], [], enable_man=no)
-	JH_CHECK_XML_CATALOG([http://docbook.sourceforge.net/release/xsl/current/manpages/docbook.xsl],
-		[DocBook XSL Stylesheets >= 1.70.1], [], enable_man=no)
-fi
+AC_PATH_PROG([XSLTPROC], [xsltproc])
 
 AM_CONDITIONAL(ENABLE_REGENERATE_MAN, test "x$enable_man" != "xno")