Bath and Northampton will put their 100% Aviva Premiership records on the line tonight when they clash at the Recreation Ground.
Saints head to the west country following victories over Gloucester and Exeter, while Bath defeated Worcester and Wasps in their opening two Premiership games.
Mallinder said that despite a bright start to the season, there was still room for improvement.
"At times in our first two games we have played well and scored good tries, but we have also been guilty of not finishing games off, and this is something we will be looking to improve."
Mallinder has made four changes from the team that edged out Exeter 24-21 last Sunday, with one of them enforced.
South African number eight Gerrit-Jan van Velze is serving a four-week ban after being cited for a tip tackle on Exeter scrum-half Will Chudley.
Van Velze admitted the offence at a Rugby Football Football Union disciplinary hearing earlier this week, and he must now sit out Premiership games against Bath, Worcester, Wasps and London Irish.