The victory against Derby was Blackburn's first since early February and it also lifted them out of the Championship's relegation zone.
"It was exactly what we needed and we know that it is the minimum for us to get out of the situation that we are in," he told the club's official website.
"Hopefully it will give us confidence going into Tuesday. It brings the group together. In the dressing room afterwards the whole squad was delighted.
"We want to replicate that feeling again, starting this Tuesday in another massive game."
Huddersfield are one point and one place better off than Rovers in 19th spot.