Certified GKH Gardening Expert
If it's just a few leaves, I wouldn't worry too much. Just remove them from the plant. I would, however, check the soil to make sure the plant isn't too dry, as browning of leaves are a good indication that it needs watering. If the browning continues, the plant may be developing a fungal issue (check for overly wet conditions and yellowing leaves as well). Neem oil is a good fungicide and will help if this is an issue.