Midfielder Ifeanyi Matthew fired the match winner for Norwegian club Lillestrom in a 2-1 home win over Valerenga.
Lillestrom have now shot to seventh on the table with 26 points from 20 matches.
Lillestrom went ahead after nine minutes, before Valerenga drew level just before the half hour mark.
Ifeanyi Matthew then scored the winning goal two minutes from half time.
It was his first goal in 20 league appearances this season.
Last season, the 20-year-old midfielder scored twice in eight appearances.
Compatriot Moses Ebiyie played his second game for Lillestrom since he joined the club this summer.