Five hundred Rhode Island residents have received duplicate tax refund checks totaling $364,000.

But that doesn't mean those affected will be able to enjoy the windfall, the Rhode Island Department of Administration and the Department of Revenue said.

The checks people received are identical, but because of security measures only one of the two checks can be cashed.

Check it out: Some 500 Rhode Island residents will receive two copies of their tax refund checks - but due to security systems only one of them can be cashed, authorities said

Because of that the department says that they don't expect to have to pay out more than the originally planned to.

'We expect no financial impact from this incident,' the department said in a statement to WPRI.

'However, out of an abundance of caution, we are evaluating current controls in order to prevent this from happening again.”

A state official says human error is to blame for the duplicates, which were sent in a group of refunds mailed Friday.

Allison Rogers, policy director for the department, said that the 500 affected people are less than one tenth of one percent of the total number of people expected to get refunds this year.

They say they're working to prevent duplicate checks from being mailed again.

Those who receive two checks can cash one and return the other to the state, along with a brief explanation, to the following address:

Rhode Island Division of Taxation

Personal Income Tax Section

Attention: Duplicate Checks

One Capitol Hill

Providence, R.I. 02908