CONOR McLaughlin and Tom Elliott could be fit for Millwall's clash with QPR on Friday night, despite both departing early in the 2-2 draw with Wolves on Tuesday.
McLaughlin went off in the 52nd minute with a groin problem, and Elliott after an hour when Steve Morison came on.
"Hopefully they're going to be okay, both just tightened up," Harris said. "Tom obviously hasn't played a great deal of football recently so 60 minutes was about right. He was just cramping up in the hamstring but he should be fine.
"Macca just felt his groin, but it could just be a knock. Hopefully both are fit for Friday night."
Millwall will be aiming to stretch their unbeaten home run to five games in their final game of 2017 when they face the Hoops.
Harris was pleased with how the Lions bounced back from conceding twice to Wolves after Lee Gregory's opener, before Jake Cooper headed the equaliser with 18 minutes left.
"I hope we've learnt the lessons from Derby last week when we conceded quick-fire goals, albeit in a really good performance having watched it back," Harris said.
"I talk all the time about my players' desire and character and attitude and spirit, it's almost like that's just what I expect. But that doesn't just happen, they have to find that within themselves in every game.
"Every game's a big game, if they're behind they want to get back into it, and if they're ahead they want to get the points. Every point we earn is do well grafted for. Their heads don't go down, they keep themselves going.
"We know with the ability we've got, especially from set-plays, we can score at any moment.
"As a group we were very, very good. Lee Gregory deserved his goal because of how good his performance was, and he was that good at Derby if not better, and the week before and the week before but without the goals. I was delighted for him.
"With Jake, it's not just being 6ft 5ins, 6ft 6ins, you've got to play like it and he does, he should be heading every ball in both boxes. It's fine being that big but you've got to go and attack the ball, and he does. Jake would probably be the first to admit he should be sitting in the dressing room with the match ball. He had three great chances and scored one.
"Jake should be scoring six, eight, 10 goals a season. Aden Flint sets the benchmark at Bristol City for scoring goals, and Coops should be right on his coattails."
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