Wednesday night's 2-2 draw against Juventus in the opening match of their defence of the trophy was the third time already this season the Blues' defensive deficiencies have cost them dearly on the big stage.
Ivanovic said: "We are playing differently this year, with more emphasis on attacking, but everyone also has to be focused on defending and being organised. This is what helped us get good results last year."
Having already seen them miss out on the campaign's first two pieces of silverware and shipping seven goals in the process, Wednesday's surrender of a two-goal lead suggested they may face an uphill struggle to hold on to the biggest prize of all.
Manager Roberto Di Matteo has been tasked with transforming Chelsea from dogs of war into one of the game's great entertainers.
And while that was always going to prove easier said than done, defender Ivanovic refused to make excuses for his and his team-mates' recent lapses.
Ivanovic admitted Chelsea "made it too easy" for Juve to get back into the game.
"It is very difficult, but it's all about our concentration and motivation," added the Serbia star, who missed last season's final through suspension. "Personally, for me, I have very big motivation for this year.
"Everyone knows when you win something - it doesn't matter if it's the league or Champions League - everyone is more motivated against you. So you have to be ready and be strong.
"I think we are - it's just we need a couple more games."
Source: PA
Source: PA