diff --git a/mpfmc/integration/machine_files/service_mode/config/config.yaml b/mpfmc/integration/machine_files/service_mode/config/config.yaml
index a7ce1d5b..775a5c1d 100644
--- a/mpfmc/integration/machine_files/service_mode/config/config.yaml
+++ b/mpfmc/integration/machine_files/service_mode/config/config.yaml
@@ -4,6 +4,7 @@ modes:
     - attract
     - game
     - service
+    - service_dmd
 
 coils:
     c_test:
diff --git a/mpfmc/integration/test_BasicGame.py b/mpfmc/integration/test_BasicGame.py
index b6abf87c..5b43a12a 100644
--- a/mpfmc/integration/test_BasicGame.py
+++ b/mpfmc/integration/test_BasicGame.py
@@ -26,7 +26,7 @@ def test_basic_game(self):
         self.assertModeRunning('game')
         self.assertTrue(self.machine.game.player)
         self.assertEqual(self.machine.game.player.ball, 1)
-        self.assertEqual({'value': 'FREE PLAY', 'persist': False, 'expire_secs': None},
+        self.assertEqual({'value': 'FREE PLAY', 'persist': False, 'timeout': None, 'expire_secs': None},
                          self.machine.variables.machine_vars['credits_string'])
 
         # make sure the MC side has everything