Brighton & Hove Albion and Millwall have headed into half time goalless following a quiet opening 45 minutes.
The home side had the stronger start, with Jose Ulloa and Kemy Agustien both looking threatening in front of goal inside the opening quarter of an hour.
James Henry had a chance for the visitors in the 29th minute, but fired his attempt well high of the crossbar.
Neither side had an effort on target before the referee blew for half time.