Martin was dropped from Derby’s team at the weekend, with Darren Bent coming in to replace him.
The Scotland international had not scored for four months prior to Saturday’s match, and he admits that he had no complaints over dropping out of the team.
However, Martin hopes to have caused Wassall a selection problem, as he finally managed to end his drought by hitting the back of the net in the Rams’ 3-1 victory.
"I spoke to him (Wassall) and (first-team coach) Craig Short on Friday for about 10 or 15 minutes," he said.
"We had a good chat and I said to them that, at the moment, I couldn't justify my place in the team. I wasn't doing enough.
"I have to accept that but he stressed that we need absolutely every person in that dressing room.
"Hopefully, I've given them a little bit of a headache after what happened when I came on."
Martin’s introduction helped Derby turn the game around, as they had looked to be heading for a defeat at Griffin Park.
Alan Judge scored a wonderful goal to put Dean Smith’s side in front, but Derby battled back.
Wassall’s side scored in the 80th minute through Jeff Hendrick, before goals from Cyrus Christie and Martin sealed the triumph.
The win was Derby’s first for nine matches, and it has lifted them up to fifth in the Championship table.
Martin will now be hoping to regain his place in Derby’s first team, with the Midlands side’s next fixture coming against Blackburn Rovers at the iPro Stadium on Wednesday evening.