The UK boyband performed a rendition of Dion's 1997 Titanic theme at their show in Berlin, reported Digital Spy.
Standing together in a circle, the group said, "We didn't know the words and still got away with it. We did it for you."
One Direction have previously covered Backstreet Boys' 'I Want It That Way' during their 'Take Me Home' tour.
The group recently promised fans a "big announcement" at their show at Wembley Stadium.
They have also been recording their third studio album, which is expected to be released before Christmas.