Wigan manager Roberto Martinez will continue to scour the January transfer market for another signing.
The Latics have already signed forward Angelo Henriquez on loan from Manchester United and midfielder Roger Espinoza from Sporting Kansas City - but Martinez is not finished his recruitment drive.
The Spaniard did however rule out defensive reinforcements, despite fears centre-back Ivan Ramis may have suffered cruciate ligament damage.
Martinez said: "We are in the January window and we are still looking for one player.
"I don't think we are going to look for a centre-half because we still have Antolin Alcaraz to come back from injury and Roman Golobart has done really well in the cup.
"I think we will have to cope with it internally, but we'll still try to add one more face before the window closes."
Martinez also took time to heap praise on striker Franco di Santo, who responded to reported interest from Liverpool by lashing home the equaliser in Saturday's 1-1 draw at Fulham.
Martinez said of the Argentinian: "It was special. Strikers are always going to be judged on clinical finishes and what they do in front of goal.
"Franco deserves a special mention for the contribution he has given to the team against Fulham.
"To have a striker with the generosity in his work is difficult to find in the modern game and I was very pleased with the way he worked hard for the team.
"Then the way he found the back of the net was a special, special strike and I think it had to be that way with the home goalkeeper's form.
"Franco can, though, be that clinical finisher, with the right, the left and good in the air. He is a special, special striker and I am glad he got the reward for all the hard work he put in."
The Irn-Bru Third Division clash appeared to be over as a contest when two goals from the Northern Irishman and a David Templeton strike earned the home side a comfortable lead at Ibrox.
But Berwick hit back with two goals from Ross Gray and Fraser McLaren to throw themselves a lifeline - with Little at fault for the second.
However, he ensured there would be no tense climax to the match for Gers - who conceded a late leveller against Elgin City last week - when he completed his hat-trick to put the match beyond Berwick.
He said: "I was really keen to get back among the goals. I'd gone off the trail a little bit so I was delighted to get a few goals. Just to keep playing is great for me.
"I was probably the most happy with the third, just to get the hat-trick. I absolutely love it when I get on the scoresheet and to score in front of all those fans is incredible.
"To get three goals was extra special, especially after it went to 3-2, it was important that we got that goal.
"I felt I was at fault myself for their second goal so I felt it was up to me to try to get us out of it."
The win allowed Rangers to stretch their lead at the summit to 19 points but Little believes the Light Blues must be more ruthless.
He said: "We played well in parts but, again, we were sloppy conceding a couple of goals. It's disappointing and it's something we need to work on.
"Something we haven't been great at is finishing off teams. The longer it goes on at 1-0 or 2-0, you give them a chance.
"I thought when we got to 3-0, that would it and we would go on and win comfortably. We were as surprised as anyone to concede a couple and that's not good enough.
"We've got to try to kill teams off earlier."
Little was sympathetic to the plight of Francisco Sandaza, who worked hard but could not find the back of the net.
The Spanish striker recently returned to action following a fractured cheekbone and looked desperate to add to his one Rangers goal this season.
Little said: "It was great that the fans really seemed to get behind him, I think they appreciate that he's working really, really hard.
"He's just been so unfortunate not to get a goal.
"You could say he maybe played better than me and didn't get the goals and that's just unlucky.
"But he understands that it's a team game and he's happy to do that shift so that's great."