diff --git a/doc/help_en.docbook b/doc/help_en.docbook
index 42c2b30..e07e991 100644
--- a/doc/help_en.docbook
+++ b/doc/help_en.docbook
@@ -1,5 +1,5 @@
 <?xml version="1.0" ?>
-<!DOCTYPE book PUBLIC "-//KDE//DTD DocBook XML V4.1-Based Variant V1.0//EN" "dtd/kdex.dtd" [
+<!DOCTYPE book PUBLIC "-//KDE//DTD DocBook XML V4.2-Based Variant V1.1//EN" "dtd/kdex.dtd" [
   <!ENTITY kappname "Knights">
   <!ENTITY % addindex "IGNORE">
   <!ENTITY % English "INCLUDE" > <!-- change language only here -->
diff --git a/doc/help_fr.docbook b/doc/help_fr.docbook
index 0b3505f..bd052bb 100644
--- a/doc/help_fr.docbook
+++ b/doc/help_fr.docbook
@@ -1,5 +1,5 @@
 <?xml version="1.0" ?>
-<!DOCTYPE book PUBLIC "-//KDE//DTD DocBook XML V4.1-Based Variant V1.0//EN" "dtd/kdex.dtd" [
+<!DOCTYPE book PUBLIC "-//KDE//DTD DocBook XML V4.2-Based Variant V1.1//EN" "dtd/kdex.dtd" [
   <!ENTITY kappname "Knights">
   <!ENTITY % addindex "IGNORE">
   <!ENTITY % French "INCLUDE"