 After some fires, which destroyed the church in the 15th and 17th centuries, it was converted in baroque style by Giovanni Spinola from Italy.Also at that time the church was reoriented, the main entrance was changed to Piwna Street, and the altar was moved to the south-western side (to the side of the town walls).In the 17th century, a good standard orchestra was maintained by the Augustinians, which performed in the church.