Brighton Labeau scored twice against Lausanne-Sport, including the late winner
Swiss champions Thun prepared for Thursday's Conference League visit by Hearts with a stunning fightback from 4-1 down to beat Lausanne-Sport 5-4 and end a run of five games without a victory.
Gian-Luca Privitelli's side scored four times in the final 20 minutes just when it looked like they might suffer a humiliating defeat away to the side sitting bottom of the Swiss Super League.
Striker Furkan Dursun headed Thun ahead after only 12 minutes.
But the hosts were determined to celebrate their 130th anniversary with a victory and hit back through an Omar Janneh penalty following a hand ball, then the Spanish forward added their second in first-half stoppage time.
On-loan Lyon forward Enzo Molebe extended the lead after 53 minutes before right-back Lucien Dahler deflected into his own net just past the hour mark.
However, Thun got back into the game when former Lausanne forward Brighton Labeau headed home after goalkeeper Melvin Mastil had saved centre-back Marco Burki's free-kick.
Striker Riccardo Braschi slotted another after 81 minutes and, five minutes later, home centre-back Karim Sow deflected a Fabio Fehr cross into his own net to level the scores.
The winner would come six minutes into stoppage time when the ball fell to Labeau from a Braschi cross for a victory that nevertheless leaves Thun sitting ninth of the 12 teams, a massive 21 points behind leaders Lugano.
Victory comes as a timely boost as Thun seek their first Conference League points after single-goal defeats by Twente and Hajduk Split.
