After the mistaken missile alert in Hawaii earlier this year, the U.S. Department of Homeland Security’s inspector general is recommending changes to the nation’s emergency alert system.

The report calls for mandating software vendors to include message preview and cancelling features in their alert software, and it recommends requiring vendors to provide training to officials using their products.

According to NBC News, the agency issued the report earlier this month after U.S. Senator Mazie Hirono of Hawaii asked DHS to examine FEMA’s role in the false missile alert. Multiple investigations blamed the alert on human error and inadequate management safeguards.