Derby County beat Brentford 3-1 in their most recent outing.
The Rams staged a late comeback at Griffin Park to secure the three points.
Derby had gone behind when Alan Judge fired in a brilliant goal for the hosts, but they fought back in the last 10 minutes.
Jeff Hendrick scored Derby’s equaliser, before Cyrus Christie put Wassall’s side in front and Martin sealed the triumph with a late strike.
The goal was the striker’s first from open play in four months, and Wassall is hoping that Martin will now be back to his best for the rest of the campaign.
“It can’t have done him any harm and he was buzzing in the dressing room," Wassall said.
“It’s his first goal from open play for a few months and we are all delighted for him.
“Hopefully it will kick-start his season. We know that he is a brilliant player and asset for this club.
“He has proved that over the last few years and we know how what he is all about when he is in form; we want him firing on all cylinders.”
Martin was Derby’s top scorer last campaign, after hitting the back of the net 21 times.
This time around goals have been harder to come by, though, and Martin’s poor run of form has coincidended with Derby’s slip down the table.
The Rams have fallen all the way down to fifth in the Championship standings, and their victory over Brentford was their first for eight matches.
Derby are next in action on Wednesday evening, when they take on Blackburn Rovers at the iPro Stadium.