Three goals in his last three games has taken Martial's tally to 15 in 31 this campaign, with the 24-year-old still getting to grips with his role as No 9 following years on the left-wing.
“If you're a wide forward, you're facing forwards more and running at people," Solskjaer said.
“Now he's in a different position, where it is more physical and you've got to be stronger with your back to goal and be more patient.
“It's your job to be in the box when the ball arrives. I'm still at him. I demand more of him.
“Sometimes, the ball is squared across the six-yard line and it's where he should be.
“I just nudge him and say: 'It should have been a goal for you.'
“Scoring 25 instead of 15 is a big difference for a No 9."