In 1999-2000, when the painting underwent restoration work and was cleaned, it was discovered that an area of blue sky in the upper right corner had been added in the 19th century.
Åren 1999-2000 genomgick tavlan en rengöring och då upptäcktes det att ett fält med blå himmel i det övre högra hörnet hade lagts till under 1800-talet.