How do I remove requiring file selection ( File Uploading class issue)

[eluser]barisv[/eluser]
Hi,

I have a form with several form_input and a form_upload. I am also doing some validations for inputs but I do not want user to select a file as an obligatory. If the user does not select a file, it says you did not select a file. It should be optional according to my scenario. Is there any way to do that ?

Thanks in advance.