Diouf now goes into the match against Everton on Boxing Day with confidence renewed after getting the opener in the 3-0 victory against Birmingham at the weekend.
With Nicolas Anelka taking his tally to 11 for the season with a brace, Bolton carry an attacking threat.
Megson said: "There's a lot of onus on Anelka, with the quality he's got, to score goals.
"But now one or two people have started to get on the score sheet on a more regular basis.
"That was Diouf's second goal in a week and he needs to start scoring more goals."