Ricky Sbragia has insisted he does not have a problem with the strength of his Sunderland squad.
The Black Cats had slipped dangerously close to the relegation zone before a 1-0 victory over Hull City on Saturday boosted their chances of beating the drop.
Sunderland had lost their four previous matches but Sbragia believes the major issue has been a lack of concentration in games, rather than a shortage of quality
"I felt the squad I had at Christmas time was a good squad to have around," said Sbragia, who replaced Roy Keane as manager in December.
"There is good team spirit within the squad, they are a good group, they do work hard.
"Sometimes, we could just do with a bit of luck in games, and at vital times we have switched off and been punished.
"There have been games we have played where we have not done it the other way around - teams have switched off and we have not punished them.
"I am happy with the squad, I am happy with the players I have got."
Sbragia will be able to think about bringing in some new faces at the end of the season but he does not see the need for wholesale changes.
He said: "When we have injuries, it might knock us a little bit. I would prefer to have all the squad on the playing field but it's not going to happen.
"But I am really pleased with them and I am happy with what I have got in general.
"We can always improve, we know that, but the bunch we have got, they are a good bunch. The team spirit is decent in the dressing room, they do work hard and that's all I can ask for."