diff --git a/meson.build b/meson.build
index 650018c29e70c26f5d1022deb2b77773753d99d3..cd1e4a58c2d7b775061a4406924749acf1566beb 100644
--- a/meson.build
+++ b/meson.build
@@ -520,9 +520,9 @@ manpage_config.set('libmansuffix', '3')
 manpage_config.set('miscmansuffix', '7')
 manpage_config.set('filemansuffix', '5')
 manpage_config.set('logdir', log_dir)
-manpage_config.set('datadir', get_option('datadir'))
-manpage_config.set('mandir', get_option('mandir'))
-manpage_config.set('sysconfdir', get_option('sysconfdir'))
+manpage_config.set('datadir', join_paths(get_option('prefix'), get_option('datadir')))
+manpage_config.set('mandir', join_paths(get_option('prefix'), get_option('mandir')))
+manpage_config.set('sysconfdir', join_paths(get_option('prefix'), get_option('sysconfdir')))
 manpage_config.set('xconfigdir', 'xorg.conf.d')
 manpage_config.set('xkbdir', xkb_dir)
 manpage_config.set('XKB_DFLT_RULES', get_option('xkb_default_rules'))