First time landlord made a big mistake.

[Nahal Beckam]

Ok. I was preparing online lease agreement for my first tenant, and made a mistake. I meant to set a small late fee to be charged per day, but instead it was set the small late fee to be charged per month if they dont pay the rent on time. We signed the agreement and I figured my mistake a few days later. Now I am worried that they may not pay on time because of this cheesy mistake. The tenant is a good one  with a very high credit score, but I feel I should have set my boundaries properly. Please let me know your recommendations how I might be able to partially fix it. thanks