shortcode columns and page

Good morning i want to make this:

[one-fifth] image[/one-fifth]
[four-fifths] text [/four-fifths]

it work but it compare on the page also this text written [four-fifths] text [/four-fifths].
i see on the page also the shortcode written down why?

Thanks Davide

http://wordpress.org/extend/plugins/genesis-easy-columns/