Chewbacca may not have just been making howling noises, after all.
Han Solo was a very clever man so it's no surprise he was able to understand Chewbacca's howls.
But a video has been released of footage on set where Chewbacca actually speaks English (and with a British accent).
In a clip from The Empire Strikes Back that has made the rounds online, documentarian Jamie Benning has resurfaced it.
Actor Peter Mayhew (who plays Chewbacca) tweeted his approval:
Other footage of Chewie speaking English on set has popped up over the years, including this behind-the-scenes look at A New Hope: