adjustment · noun C or U /əˈdʒʌst.mənt/
adjustment
B2 a small change that you make to something so that it works better, fits better, or is more suitable
Dictionary examples:
We've made a few adjustments to the schedule.
I have a few minor adjustments to make.
Learner example:
I have some questions and a minor adjustment to make. (First Certificate in English; B2; Portuguese)