moo@cow[625]~>perl -mYAML -MCGI=:standard -we 1 # ^^^ No problem, -m means "use YAML ()" moo@cow[626]~>perl -MYAML -MCGI=:standard -we 1 Subroutine main::Dump redefined at /home/moo/perl5/lib/perl5/CGI.pm line 296.