Code from manual causes compilation warning

[Urs Liska]

When following the Application Usage manual to use the '-e' command line 
option
http://www.lilypond.org/doc/v2.17/Documentation/usage/command_002dline-usage.html#basic-command-line-options-for-lilypond

and writing

#(use-modules (guile-user))


at the beginning of the document I get the following

WARNING: #f: imported module (guile-user) overrides core binding
        `%module-public-interface'
    

It is identical with different versions between 2.16.2 and 2.17.27.

Is this warning something to care about or can I ignore it?
In any case I think following the documentation shouldn't result in such 
a warning.

Does this point to an issue with the recommended practice?
Is it a false alarm that can/should be suppressed/avoided?
Should it at least be mentioned in the documentation?


Urs