1 files changed, 1 insertions, 1 deletions
diff --git a/pkgs/data/sgml+xml/schemas/xml-dtd/docbook-ebnf/default.nix b/pkgs/data/sgml+xml/schemas/xml-dtd/docbook-ebnf/default.nix
index 5d5a622ba42..eeda6b0b6cd 100644
--- a/pkgs/data/sgml+xml/schemas/xml-dtd/docbook-ebnf/default.nix
+++ b/pkgs/data/sgml+xml/schemas/xml-dtd/docbook-ebnf/default.nix
@@ -6,7 +6,7 @@ stdenv.mkDerivation {
   name = "docbook-xml-ebnf-1.2b1";
   builder = ./builder.sh;
   dtd = fetchurl {
-    url = http://www.docbook.org/xml/ebnf/1.2b1/dbebnf.dtd;
+    url = http://catamaran.labs.cs.uu.nl/dist/tarballs/dbebnf-1.2b1.dtd;
     md5 = "e50f7d38caf4285965c7a247e026fa7c";
   };
   catalog = ./docbook-ebnf.cat;