Sepp Blatter appealed for "unity, team spirit and fair play" as he opened the Fifa Congress in Zurich this morning.
He told delegates "together we can do it" ahead of the Fifa presidential election which is due to take place later.
Blatter is expected to win against his rival Prince Ali Bin al Hussein and could gain as much as 155 out of the 209 votes.
Chief Executive of the Irish Football Association John Delaney has admitted Fifa paid the organisation to avoid a legal case.
FIFA has said that Julio Grondona, who died last year, authorised a $10m payment that is at the heart of the bribery scandal.
Prince William outlined a "huge disconnect between the sense of fair play" and "allegations of corruption" within Fifa.