symbol conflicts when loading a file

Created by: phmarek

I tried loading a C file into SBCL 1.1.14-2 (debian, amd64), but got this error:

(vacietis:load-c-file "...")
read error during compile-file:

  use-package #<package "VACIETIS.LIBC.STDIO.H"> causes
  name-conflicts in #<package "COMMON-LISP-USER"> between the
  following symbols:
    vacietis.libc.stdio.h:remove, common-lisp:remove

Do you have a hint for me, please?