Maddinson has scored zero, one and four in his three test innings since making his debut against South Africa in Adelaide, and his place in the team had been in question following the decision to call all-rounder Hilton Cartwright into the squad.
Smith, however, said Maddinson would play at the Melbourne Cricket Ground on Monday as his fast bowling trio of Josh Hazlewood, Mitchell Starc and Jackson Bird had recovered well after a heavy workload in the first test in Brisbane.
