NBC has ordered two more episodes of “Chicago P.D.,” bringing the season to 15 episodes.

Through its first four weeks on the schedule, the Dick Wolf drama has averaged a 1.7 rating/5 share in they key adults 18-49 demographic, and 6.8 million viewers overall.

Also read: ‘Chicago P.D.’ Review: Second City to None

Excluding “Saturday Night Live” specials, the four “Chicago P.D.” episodes so far have earned NBC’s four best results in the Wednesday 10 p.m. hour since Sept. 25.