***************
*** 46,51 ****
    ruby_init_xml_xinclude();
    ruby_init_xml_xpath();
    ruby_init_xml_xpath_context();
    ruby_init_xml_xpointer();
    ruby_init_xml_xpointer_context();
    ruby_init_html_parser();
--- 46,52 ----
    ruby_init_xml_xinclude();
    ruby_init_xml_xpath();
    ruby_init_xml_xpath_context();
+   ruby_init_xml_xpath_expression();
    ruby_init_xml_xpointer();
    ruby_init_xml_xpointer_context();
    ruby_init_html_parser();