Oops!

Metro posted incorrect signs at its Metro Center station — a mistake that is expected to cost some money to fix.

The transit agency is in the process of installing hundreds of signs throughout the system at its 86 rail stations to show the new Silver Line in Northern Virginia that will run through Tysons Corner to the edge of Reston. The Silver Line is expected to open sometime in 2014 although no firm date has been set.

But some of the new signs Metro workers started to put up at stations in the system had a mistake.

About a dozen signs at the Metro Center station went up earlier this week showing five stations that the Blue Line doesn’t serve. According to the incorrect signs, the Blue Line made stops at Court House, Clarendon, Virginia Square, Ballston and East Falls Church.

That’s wrong.

Those five stops are only served by the Orange Line. The Blue Line splits off from the Orange Line at the Rosslyn station.

The mistaken signs was first reported Tuesday by Adam Tuss at NBC 4.

Metro said it regrets the error and couldn’t immediately explain how it happened.

Dan Stessel, a Metro spokesman, said Wednesday that the signs have been taken down and “new signs will go up this week.” Stessel said.

He said the cost to fix the signs would be less than $2,000, but he said he did not know an exact price. He said the contractor that made the signs will be responsible for making the fix.

“May this be the biggest problem we deal with for [Tuesday],” he said. “If that’s what the news is about Metro, we’ll take it.”