mistake in lease! what to do?

[Brandon Morgan]

hi all this is just a hypothetical. I currently am a new landlord. I bought a duplex house near Scranton this past year and it is rented out .  I am a few months in and it has been going okay so far despite a few hiccups. However I just realized there was a mistake in one of the tenants' lease! for one tenant it says that the landlord is responsible for utilities, and for the other tenant it says that the tenant is responsible for utilities. It is supposed to be tenant is responsible for utilities. I am going to have to have my realtor make an addendum to the lease. the tenant has been paying for utilities up until this point. has anyone ever been through this? also if the landlord becomes responsible for utilities would i be able to adjust the rent?? open to any advice, recommendations or past experiences.