The world’s largest memory chip maker posted an operating profit of 9.18 trillion won ($6.6 billion) “largely due to one-off costs”.

It also warned in a statement that “the strength of the Korean won against the U.S. dollar resulted in a negative impact on company-wide operating profit.”

Although operating profit nearly tripled compared to a year ago, it fell short of market expectations and was down 12% compared to the previous quarter.