Fans of the Idaho Steelheads hockey team are suing the arena where home games are played because the concession stand sells a large beer in a tall skinny cup for $7 and a small beer in a short wide cup for $4, but both cups hold the same amount of beer.
Fans of the ECHL team are seeking $10,000 in damages, The Associated Press reported.
A fan posted a video to YouTube showing the amount of beer in each cup is the same.
Eric Trapp, president of CenturyLink Arena, acknowledged the problem on the team's Facebook page.
"The differentiation in the size of the two cups is too small. To correct that problem, we're purchasing new cups for the large beers that will hold 24 ounces, instead of 20, for the remainder of this season to provide better value to our fans," he wrote in a statement.