In 1611, Janzoon returned to the Netherlands, believing that the south coast of New Guinea was joined to the land along which he had sailed, and Dutch maps reproduced that error for many years.
Janszoon poté, co se vrátil do Nizozemska věřil, že jižní pobřeží Nové Guineje je spojeno se zemí, podél které se plavil a holandské mapy reprodukovaly tuto chybu po mnoho let.