The interim head coach of the 2012 Grand Slam winners will stick with the team that recorded a 16-6 win in Paris.
Howley told Sky Sports News: "I have told the players the same 15 will start in Italy. I think it is pretty important from a coach's perspective that we reward the players who have gone out on the field.
"Sam [Warburton] is better, he is still feeling the stinger to some extent but I wanted clarity. In terms of preparation, the team comes first. What I don't want is to wait on medical opinions, and the way the team went on the weekend they deserve to start again.
"It is a reward for the performance. We have talked about the determination, the attitude and resilience, and that is what you reward a side for when they come up with a win in France, which is not easy to get on any occasion."
Wales face Italy in Rome when the Six Nations resumes on February 23.