[otrs] new e-mail ticket: Re in subject

Hi all, When creating a new e-mail ticket, the first e-mail gets "Re:" in it's subject. I don't think this is correct. Is this a bug, a feature or something I can adjust easily? See for yourself: (OTRS -> Ticket -> E-mail Ticket -> Select customer, type your e-mail -> Send -> The e-mail's subject has "Re: Ticket# Subject".) Pim