Daniel Radcliffe recently revealed that when the cameras were finally turned off earlier this year (10) the cast and crew wept - but some of the stars will be heading back to the set once more.
Daniel Radcliffe, Rupert Grint and Emma Watson are needed to re-shoot a scene set at London's King's Cross train station over the festive period (Dec10).
Watson tells Britain's Radio Times, "We stopped trains at King's Cross when they said we could do the scene. I mean we are Harry Potter!
"We only had two days to shoot it and we needed so much more time than that. We have re-shoots at Christmas."
The new shoot will take place at the main Potter set at Leavesden Studios in Hertfordshire, England.