The Altered Augsburg Confession (Lat. Confessio Augustana Variata) is a later version of the Lutheran Augsburg Confession that includes substantial differences with regard to holy communion and the presence of Christ in bread and wine. Philipp Melanchthon made several changes to the original Augsburg Confession in the years following its 1530 publication. Most of the changes were about the language of the confession. In 1540 and 1542, he rewrote some parts of the confession in order to reconcile it with the views of Calvinists. John Calvin himself did sign the 1540 version of the confession.