diff --git a/configure.ac b/configure.ac
index d559d2c..9644455 100644
--- a/configure.ac
+++ b/configure.ac
@@ -31,10 +31,10 @@ AC_CONFIG_SRCDIR([Makefile.am])
 AM_CONFIG_HEADER([config.h])
 AC_CONFIG_AUX_DIR(.)
 
-# Require xorg-macros: XORG_DEFAULT_OPTIONS
+# Require X.Org macros 1.8 or later for MAN_SUBSTS set by XORG_MANPAGE_SECTIONS
 m4_ifndef([XORG_MACROS_VERSION],
-	  [m4_fatal([must install xorg-macros 1.3 or later before running autoconf/autogen])])
-XORG_MACROS_VERSION(1.3)
+          [m4_fatal([must install xorg-macros 1.8 or later before running autoconf/autogen])])
+XORG_MACROS_VERSION(1.8)
 XORG_DEFAULT_OPTIONS
 
 AM_INIT_AUTOMAKE([foreign dist-bzip2])
diff --git a/man/Makefile.am b/man/Makefile.am
index c020b58..e31f6fa 100644
--- a/man/Makefile.am
+++ b/man/Makefile.am
@@ -32,21 +32,8 @@ EXTRA_DIST = @DRIVER_NAME@.man
 
 CLEANFILES = $(driverman_DATA)
 
-# Strings to replace in man pages
-XORGRELSTRING = @PACKAGE_STRING@
-  XORGMANNAME = X Version 11
+# String replacements in MAN_SUBSTS now come from xorg-macros.m4 via configure
 
-MAN_SUBSTS = \
-	-e 's|__vendorversion__|"$(XORGRELSTRING)" "$(XORGMANNAME)"|' \
-	-e 's|__xorgversion__|"$(XORGRELSTRING)" "$(XORGMANNAME)"|' \
-	-e 's|__xservername__|Xorg|g' \
-	-e 's|__xconfigfile__|xorg.conf|g' \
-	-e 's|__projectroot__|$(prefix)|g' \
-	-e 's|__appmansuffix__|$(APP_MAN_SUFFIX)|g' \
-	-e 's|__drivermansuffix__|$(DRIVER_MAN_SUFFIX)|g' \
-	-e 's|__adminmansuffix__|$(ADMIN_MAN_SUFFIX)|g' \
-	-e 's|__miscmansuffix__|$(MISC_MAN_SUFFIX)|g' \
-	-e 's|__filemansuffix__|$(FILE_MAN_SUFFIX)|g'
 
 SUFFIXES = .$(DRIVER_MAN_SUFFIX) .man