Habibou was first to score in the beginning of the second half. Chevalier made it 2 - 0 barely 20 minutes later.
The result means that Standard are fifth in the ranking and failed to take the third spot. Zulte Waregem are eleventh.
There was also an upset in Bruges where underdogs Cercle Brugge beat city rivals Club Brugge 1 - 0 away. D'Haene scored in the 78th minute.
The result allows Cercle to summersault over Club Brugge to take the seventh place in the standings. Club Brugge are eighth.
Racing Genk top league division one followed by Anderlecht. AA Gent are third.