Property Management: Lease Renewal Fee on MTM "renewal"

[Marco G.]

Tenant is going month-to-month at a higher rent than the (increased) 12-month lease rate.  It's about a 20% increase from the current base rent, but tenant frequently pays late and it's not much more when that is considered.

Prop Mgt co is charging me the same "lease renewal" fee that they'd impose if there was an actual lease ($95).  Is the imposition of this fee a reasonable bone to pick with them?