Romelu Lukaku became Belgium's outright record scorer with the only goal in an uninspired 1-0 friendly win over Japan in Bruges.

The Manchester United striker had pulled level with Bernard Voorhoof and Paul Van Himst on 30 goals after his double in Friday's pulsating 3-3 draw with Mexico.

And he took his tally to 31 with 18 minutes remaining against Japan on Tuesday, heading in from almost on the line after a superb run and cross from Nacer Chadli.

Before his historic goal, it had been a frustrating night for the 24-year-old, who was comfortably shackled by a stubborn Japan defence.

Belgium boss Roberto Martinez will be pleased with his side's improved defensive display, but is likely to be concerned by the struggles of his star-studded attack against a side that had conceded six goals in their last two games against Haiti and Brazil.