London Broncos made it two wins from two games during their training camp in France with a 26-22 victory over Catalan Dragons in their friendly in Perpignan.
The home side led 12-8 at half-time thanks to tries from forwards Remi Casty and Olivier Elima, with Chad Randall and Luke Dorn touching down for the Broncos.
The Dragons extended their advantage to 16-8 through Mathias Pala but the visitors struck through Jamie O'Callaghan and Michael Robertson to edge 20-16 ahead.
Veteran forward Steve Menzies looked to have won it for the French side when he went over for their fourth try.
However prop Mark Bryant clinched a confidence-boosting win for the Londoners with a try two minutes from time.
London had Michael Witt and Scott Wheeldon sent to the sin bin for fighting in the second half, along with Catalan co-captains Casty and Gregory Mounis.
The Broncos were following up Saturday's 34-0 win over Toulouse.