Lens have stretched their unbeaten run to 10 games in the French league after a lacklustre 0-0 draw away to Montpellier.
The point took Lens above Reims into fifth in Ligue 1, although Reims have a game in hand against second-placed Nice on Sunday.
Visiting Lens had two thirds of possession and slightly more chances but neither side sparkled on France's southern coast.
The result will concern Montpellier coach Michel Der Zarkarian and in particular his forwards' lack of potency in front of Brice Samba's goal.
Montpellier have gone six league games without a win and scored only twice in that period.
The point lifted Montpellier one place to 13th, but they remain just two points above the relegation zone.
Paris Saint-Germain top the league, four points clear of Nice.
Australian Associated Press