diff --git a/doc/nes.sgml b/doc/nes.sgml
index e806d753f..8f4374e05 100644
--- a/doc/nes.sgml
+++ b/doc/nes.sgml
@@ -1,4 +1,4 @@
-<!-- <!doctype linuxdoc system> //-->
+<!doctype linuxdoc system>
 
 <article>