Paul Lawrie benefited from a putting tip off a friend in shooting a 6-under 66 at the Qatar Masters, giving the former British Open champion a one-shot lead after the second round on Thursday.

The 47-year-old Lawrie followed up a first-round 67 to move to 11-under par, a stroke clear of Nicolas Colsaerts (68).

Lawrie missed the cut in Abu Dhabi last week and was given some putting advice from fellow Scottish player Marc Warren, who said Lawrie's stroke was too long and slow.

Lawrie, who rolled in seven birdies on Thursday, said "I've been working on it the last couple of days and certainly feels as though I've got it."

Sergio Garcia is in a five-way tie for sixth place after a 66. Joint first-round leader Louis Oosthuizen shot 73 and is five strokes back.