Macy’s said Wednesday that it has tightened internal financial accounting measures after completing a probe of a rogue employee who hid $151 million in delivery expenses over a span of nearly three years.

Macy’s finally released its third-quarter earnings on Wednesday after having to delay it due to a massive accounting scandal caused by one employee. The employee, who no longer works for Macy’s made one mistake that led to years of coverup.

Macy’s has completed its investigation into accounting problems and found that a single employee’s mistake and coverup created $151 million in false bookkeeping entries.