The choir with its three naves and flat apsis was built during the second construction programme in the second and third quarters of the 13th century. The church had been finished by that time and is a jewel of Scheldt Gothic. But at the beginning of the 14th century that was not sufficient and the choir was enlarged by two bays, side chapels and choir chapels. The upper parts were completed in Lede-stone in the 15th century, a fact that also had to be taken into consideration during the restoration. Adding the chapels and elevating the side roofs in 1672 certainly did not benefit the harmonious structure of the church. The interior of the church was actually further mutilated during the iconoclastic fury between 1566 and 1578-1584 and later on by the redecoration in baroque style in the 17th and 18th centuries, during which the entire interior was plastered and the triforium was bricked up. Only the vaults were plastered again during the restoration.

The restoration of the choir mainly consisted in removing the elevated side roofs which partly hid the threelight windows, renovating the roof construction, fanlights and columns, restoring the faÁades and triforium, the buttresses and flying buttresses, adapting the roof construction above the choir chapels, changing the broad windows which got tracery, installing floor heating and a choir floor. The restoration of the choir was completed by the 10th of November 1986.

Worth mentioning is that during works in the annex axis chapel beautiful vaultal painting from the 15th, end of the 16th and second half of the 18th centuries were discovered. The paintings were restored. The canopies at the columns, dating back to the middle of the 13th century, were also reconstructed. Sculptured corbelstones (false gargoyles from the third quarter of the 13th century) were found in the infillings of the choir's wall. The painted tombstones under the choir floor were maintained. Two stained-glass windows by Capronnier (middle of the 19th century) are being restored in St Lucas institution.