A new Star Wars fan theory suggests that Obi-Wan Kenobi’s ending has answered a lingering question from the original trilogy involving Darth Vader. spoilers for Obi-Wan Kenobi episode 6 continue.

Darth Vader unmasking himself as he lay dying at the end of Return of the Jedi has stuck with generations of Star Wars fans. You’ve probably also noticed his head injury dozens of times. How did the Sith Lord (then played by Sebastian Shaw) get the battle scar? The smart money may have been during the events of Revenge of the Sith on Mustafar, which left Anakin mangled and beaten on the planet’s burning lava banks. But, as some on social media have pointed out, it’s possible that Obi-Wan actually caused the injury during the events of Obi-Wan Kenobi’s ending.

Obi-Wan and Vader battled on an unnamed planet midway through the sixth episode. They each also took some serious hits; Obi-Wan was buried under the rubble, while the Jedi Master eventually retaliated with an avalanche of rocks, including one that pierced Vader’s mask and potentially caused the scars that remain with him decades later. Mind. Spoiled.

However, some fans are divided: noting Anakin’s near-fatal injuries in Episode 3 (opens in a new tab): Revenge of the Sith as proof enough that the scars were caused then. Others, however, having applauded (opens in a new tab) – saying that it’s perfectly feasible for a barrage of rocks to deepen the wound even more, especially since the episode makes a direct reference to the left side of his face being badly damaged from Obi-Wan’s attacks.