FC Barcelona stumbled slightly in losing by a single Cléber goal at the home of the Polish champions but still marched into the group stage at Wisła Kraków's expense.
Josep Guardiola's team, leading 4-0 from the first leg of this third qualifying round tie, were undone on the night by a 52nd-minute header from Cléber as Maciej Skorža's men claimed back a measure of pride. But it was Barcelona who won the ticket for Thursday's UEFA Champions League draw.
Wisła might have gone ahead early on when the well-placed Piotr Brożek sent a header wide. However, a reminder of the attacking power which had brought Barcelona goals from Samuel Eto'o, Xavi Hernández and Thierry Henry a fortnight ago, came with Henry's miss from Andrés Iniesta's pass.
The breakthrough finally arrived seven minutes into the second half when the unmarked Cléber rose to nod in a corner. If the strike lifted the home side, it also stung the 2006 UEFA Champions League winners. Carles Puyol and Eto'o went close before Gerard Piqué smashed a long-range shot against the post. When substitute Bojan Krkić wasted a late chance, Wisła's consolation victory was secure. Bigger tests lay ahead for the Blaugrana.