Thomas Mueller has said Bayern Munich are out to prove themselves as worthy European champions in Friday's Super Cup final rather than avenge their 2012 Champions League final defeat to Chelsea.

Pep Guardiola's Bayern take on Jose Mourinho's Europa League-winners Chelsea at Prague's Eden Arena stadium on Friday looking to win the Super Cup at the fourth attempt after losing the 2001, 1976 and 1975 finals.

Having suffered the heartbreak of losing to Chelsea in a penalty shoot-out at their own Allianz Arena stadium in the 2012 Champions League final, Bayern bounced back with a 2-1 victory over Borussia Dortmund at Wembley in May to claim their fifth European Cup.

Few Bayern fans need reminding of the heartbreak of losing the Munich final 15 months ago, when Mueller's 83rd-minute goal was cancelled out by a Didier Drogba header two minutes from time before the Ivory Coast star hit the winning spot-kick.

Mueller said Bayern exorcised the ghosts of their Munich defeat by winning last season's treble of Champions League, Bundesliga and German Cup, and now aim to prove themselves as deserving European champions.

"Last season is still fresh and it was very positive, there is no lingering bitterness (from the 2012 Champions League final)," said Mueller.

"Of course, we were able to compensate for that bitter defeat, we just want to show May's win was no coincidence, we want to prove ourselves and it's the best motivation for Friday's final."

Czech Republic goalkeeper Petr Cech was Chelsea's hero in the Munich final when he saved Arjen Robben's penalty in added time, then saved Ivica Olic's spot-kick and palmed Bastian Schweinsteiger's effort onto the post in the shoot-out before Drogba's winner.

Mueller denied that he and his Bayern teammates faced a 'nightmare scenario' up against Cech.

"We all know what happened then, we also know he's a good goalkeeper, so it's not a nightmare scenario," said the 23-year-old.

"We don't want to get to a penalty shoot-out, we want to win in regular time, of course we don't have a positive example to look back on, but we'll do our best to win it."

Bayern's main injury worry is Bastian Schweinsteiger, who damaged his right ankle in Tuesday's 1-1 draw at Freiburg, but he took part in Thursday's training session and Guardiola was 'optimistic' the Germany star would play.

"Bastian is better, we'll check how his ankle is, I will talk with the doctors and decide, but hopefully he can play," said the Spaniard.

Having taken charge of Bayern in June, Guardiola, who won 14 titles as Barcelona coach between 2008 and 2012, faces his former Real Madrid nemesis Mourinho in his first international final with Bayern.

Both managers ducked questions about their rivalry and Guardiola was quick to play down their renewed sideline battle.

"We're here for the players, not the coaches," he insisted.

"Millions of people around the world will watch the game, not the coaches.

"I have a great respect for him, but tomorrow I will try to win and so will he too."

Prague's state-of-the-art Eden Arena stadium, opened in 2008, seats just 21,000 fans, but Guardiola was amused when asked if he thought it was small-scale compared to Barcelona's enormous Camp Nou or Bayern's Allianz Arena.

"You think I always played as a trainer or player at a stadium in front of millions of people?" he asked.

"I started as a trainer at a fourth-division club, where the only supporters were just my father, my mother and my son watching the game, that's all.

"The important thing is just to be here in Prague."