'Display Order' button in email

[thepimster]

Hi,

I am using my store only for guests, yet the email they receive upon submitting their order, displays a 'Display Order' button.
As they are not, and never will be registered users, this button will always result in a 'You are not logged in. Please login.' error message.

How can I remove the button from the email?

Thanks!
Pim