Wes Morgan grabbed the vital goal as Leicester moved a step closer to winning the title by edging to a 1-0 victory against Southampton.
The Foxes rode their luck at times but are now seven points clear of second-placed Tottenham with only six games of the campaign remaining.
Leicester started brightly and Christian Fuchs headed an early chance wide before Morgan saw his volley blocked by Matt Targett.
When Southampton responded Graziano Pelle headed over Kasper Schmeichel’s goal and Sadio Mane wasted a clear opening, rounding the Foxes goalkeeper before seeing his effort blocked by Danny Simpson.
Leicester responded to the let-off by taking the lead in the 38th minute, Morgan powering a header from Fuchs’ excellent cross past Fraser Forster.
The visitors started the second half very brightly but Cedric Soares’ cross was just too high for Pelle.
However, only a stupendous Forster save on the hour mark stopped Leicester scoring a second goal, the former Celtic goalkeeper somehow getting back to turn the ball over the bar after it had looped off Jose Fonte.
Saints continued to press though, with Pelle and substitute Dusan Tadic going close to grabbing an equaliser, but on too many occasions their final ball was not good enough.
Claudio Ranieri’s side were content to sit back and catch Southampton on the break, with Jamie Vardy and Riyad Mahrez willing runners.
In the 71st minute Forster saved Southampton again, keeping Simpson’s close-range effort out when the Leicester defender had been set up by Vardy.
As the minutes ticked by the home team closed the match down well and, although Vardy went close after being set up by Marc Albrighton, Leicester had already done enough to clinch yet another single-goal victory.