X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=ghc%2Fdocs%2Fusers_guide%2Fusers_guide.sgml;h=41ef1f8a3daeeb13b6cf8342cbbe298a5cfdd740;hb=73bcca8892e0d0fd3f839408e043e06d989e0240;hp=1168c7c84df318c27cfeec30654d6e7155e1f840;hpb=44ff838446af62da8d941dba6390e2a5a935f715;p=ghc-hetmet.git

diff --git a/ghc/docs/users_guide/users_guide.sgml b/ghc/docs/users_guide/users_guide.sgml
index 1168c7c..41ef1f8 100644
--- a/ghc/docs/users_guide/users_guide.sgml
+++ b/ghc/docs/users_guide/users_guide.sgml
@@ -1,4 +1,4 @@
-<!DOCTYPE BOOK PUBLIC "-//OASIS//DTD DocBook V4.1//EN" [
+<!DOCTYPE BOOK PUBLIC "-//OASIS//DTD DocBook V3.1//EN" [
 <!ENTITY % ug-ent SYSTEM "ug-ent.sgml">
 %ug-ent;
 <!ENTITY ug-book SYSTEM "ug-book.sgml">