[plt-scheme] web-server issue

Works:

(require (lib "servlet-helpers.ss" "web-server"))
request-uri

Does not work:

(require (lib "servlet.ss" "web-server"))
request-uri

Yet in servlet.ss:
  (provide
    (all-from "servlet-helpers.ss")

Please advise?

-- 
Jay McCarthy <jay.mccarthy at gmail.com>
http://www.makeoutcity.com/