diff --git a/docs/manual/gstreamer-manual.sgml b/docs/manual/gstreamer-manual.sgml
index 43e6c9ad86..7b6b4e0e0f 100644
--- a/docs/manual/gstreamer-manual.sgml
+++ b/docs/manual/gstreamer-manual.sgml
@@ -1,4 +1,4 @@
-<!DOCTYPE book PUBLIC "-//GNOME//DTD DocBook PNG Variant V1.0//EN" "" [ 
+<!DOCTYPE book PUBLIC "-//OASIS//DTD DocBook V4.1//EN" [
 <!ENTITY INTRO SYSTEM "intro.sgml">
 <!ENTITY MOTIVATION SYSTEM "motivation.sgml">
 <!ENTITY GOALS SYSTEM "goals.sgml">