When the U.S. government’s official jobs report for May came out on Friday, it included a note at the bottom saying there had been a major “error” indicating that the unemployment rate likely should be higher than the widely reported 13.3 percent rate.

The special note said that if this “misclassification error” had not occurred, the “overall unemployment rate would have been about 3 percentage points higher than reported,” meaning the unemployment rate would be about 16.3 percent for May.

The Bureau of Labor Statistics, the agency that puts out the monthly jobs reports, said it was working to fix the problem.

“BLS and the Census Bureau are investigating why this misclassification error continues to occur and are taking additional steps to address the issue,” said a note at the bottom of the Bureau of Labor Statistics report.