--- a/cmake/FindDocBookXML4.cmake

+++ b/cmake/FindDocBookXML4.cmake

@@ -51,6 +51,7 @@ set_package_properties(DocBookXML4 PROPE

 function (locate_version version found_dir)

     set (DTD_PATH_LIST

+        ${CMAKE_INSTALL_DATAROOTDIR}/xml/docbook/dtd/${version}

         ${CMAKE_INSTALL_DATAROOTDIR}/xml/docbook/schema/dtd/${version}

         ${CMAKE_INSTALL_DATAROOTDIR}/xml/docbook/xml-dtd-${version}

         ${CMAKE_INSTALL_DATAROOTDIR}/sgml/docbook/xml-dtd-${version}