LLC - An Accountant says it's not worth it to claim a deduction for a home office?

I have two rooms in my house that I exclusively use for my LLC, taxed as an S-Corp.
From what I've read, it looks like I would qualify for a home office deduction.

An accountant I spoke to says not to bother because I'd have to claim the deduction from the business as rental income on my personal taxes, and so it's all a wash. Is this correct? Any advice or links to show him is appreciated.