diff -ur docbook-4.5.orig/debian/control docbook-4.5/debian/control
--- docbook-4.5.orig/debian/control	2012-03-08 16:58:23.000000000 +0000
+++ docbook-4.5/debian/control	2012-03-08 17:17:32.000000000 +0000
@@ -14,6 +14,7 @@
 Depends: sgml-data (>= 1.5.0), ${misc:Depends}
 Conflicts: docbook-xml (<= 4.4-4)
 Suggests: psgml, docbook-dsssl, docbook-xml, docbook-defguide
+Multi-Arch: foreign
 Description: standard SGML representation system for technical documents
  DocBook is an SGML document type definition (DTD) that is well-suited
  to books, articles, or reference documentation about technical