Climate protesters threw soup on Vincent van Gogh’s “Sunflowers” in London’s National Gallery on Friday to protest fossil fuel extraction.

The action caused no damage to the glass-covered painting.

The group Just Stop Oil, which wants the British government to halt new oil and gas projects, said activists dumped two cans of tomato soup over the oil painting.

The two protesters also glued themselves to the gallery wall.

The gallery, per The Associated Press, said “there is some minor damage to the frame but the painting is unharmed.”

London’s Metropolitan Police said officers arrested two people on suspicion of criminal damage and aggravated trespass.

“Specialist officers have now un-glued them and they have been taken into custody to a central London police station,” officials said in a statement.

The Associated Press contributed to this report.