diff --git a/src/etc/changelog.xsl b/src/etc/changelog.xsl
index 7b243cc57..46828ccbd 100644
--- a/src/etc/changelog.xsl
+++ b/src/etc/changelog.xsl
@@ -62,8 +62,8 @@
+ doctype-public="-//W3C//DTD HTML 4.01//EN"
+ doctype-system="http://www.w3.org/TR/html401/strict.dtd"/>