Most users on cryptocurrency exchanges are worried about having their funds stolen or locked away, yet the cryptocurrency exchange Coinzest has accidentally given their users $5.3 million in various cryptocurrencies.

South Korea-based cryptocurrency exchange Coinzest had been planning to give its users an airdrop of 30,000 We Game Tokens (WGT), however, due to a “computer error” CoinZest mistakenly loaded user’s accounts with Bitcoin, Ethereum, and other cryptocurrencies.

“The WGT token airdrop process caused a computer error that incorrectly reflected the deposit details of some customers’ assets … we took measures to immediately check the server to prevent any additional damage as a result of the sales and purchases of some misappropriated assets by some customers," Coinzest said in a notice posted on their website.

Following the computer error, Coinzest’s development team suspended the site and their servers, hoping to find a solution to their “error.” Coinzest quickly did a database restore to the point before the error was made, and began reaching out to customers who had mistakenly been sent cryptocurrency.

Coinzest was able to recover $2.6 million of the cryptocurrencies they had inadvertently given to their users, however, many users had already withdrawn the funds credited into their account, back into Korean won.

The sale of millions in crypto was enough to cause the prices of the involved cryptocurrencies to drop suddenly, which may have been what tipped off Coinzest developers that something had gone terribly awry.

The price of Bitcoin on the exchange hit the won equivalent of $833 on Coinzest temporarily.

Coinzest CEO Jeon Jong-hee apologized for the incident and promised his firm would be bolstering its emergency response system to prevent future incidents.

“I am extremely sorry that I have caused an unexpected computational error to customers … I am very sorry for my customers,” Jeon said.