diff --git a/tests/audio/actor_test.py b/tests/audio/actor_test.py
index eac299cf..3f7e56ce 100644
--- a/tests/audio/actor_test.py
+++ b/tests/audio/actor_test.py
@@ -23,6 +23,7 @@ class AudioTest(unittest.TestCase):
             'audio': {
                 'mixer': 'fakemixer track_max_volume=65536',
                 'mixer_track': None,
+                'mixer_volume': None,
                 'output': 'fakesink',
                 'visualizer': None,
             }
@@ -73,6 +74,7 @@ class AudioTest(unittest.TestCase):
             'audio': {
                 'mixer': 'fakemixer track_max_volume=40',
                 'mixer_track': None,
+                'mixer_volume': None,
                 'output': 'fakesink',
                 'visualizer': None,
             }
@@ -88,6 +90,7 @@ class AudioTest(unittest.TestCase):
             'audio': {
                 'mixer': 'fakemixer track_max_volume=0',
                 'mixer_track': None,
+                'mixer_volume': None,
                 'output': 'fakesink',
                 'visualizer': None,
             }