Munster star Ronan O'Gara believes the European champions need to slash their error-count in Saturday's Heineken Cup showdown with Leicester at Thomond Park.

The Irish giants followed Leinster, Llanelli Scarlets and Biarritz into the last eight, but they were given a major fright by Bourgoin in Geneva yesterday before prevailing 30-27.

Bourgoin led three times, clawed back to 20-20 and outscored their illustrious opponents 4-3 on tries, but O'Gara's goalkicking — he finished with 15 points — ensured Munster remained top of Pool Four.

Currently three points above Leicester, they will secure a home quarter-final tie if they topple the Tigers, yet fly-half O'Gara knows there are areas for improvement.

He said: "The scores Bourgoin got, we really gifted them to them. They got their tries directly from our own errors.

"To gift them those scores was really disappointing, and it is something we are going to have to look at before the Leicester game."