--- a/data/meson.build	2020-10-11 19:09:20.990000000 +0000
+++ b/data/meson.build	2020-10-11 19:09:13.540000000 +0000
@@ -27,6 +27,7 @@
     output: 'shared-mime-info-spec-html',
     command: [
         xmlto,
+	'--skip-validation',
         '-o', '@OUTPUT@',
         'html-nochunks',
         '@INPUT@',