diff --git a/supervisor/tests/test_supervisord.py b/supervisor/tests/test_supervisord.py
index 471b0ef4f..e1111fa46 100644
--- a/supervisor/tests/test_supervisord.py
+++ b/supervisor/tests/test_supervisord.py
@@ -447,6 +447,7 @@ def make_pconfig(name, command, **params):
                 'name': name, 'command': command,
                 'directory': None, 'umask': None, 'priority': 999, 'autostart': True,
                 'autorestart': True, 'startsecs': 10, 'startretries': 999,
+                'maxbackoff': 0, 'backoffincrement': 1,
                 'uid': None, 'stdout_logfile': None, 'stdout_capture_maxbytes': 0,
                 'stdout_events_enabled': False,
                 'stdout_logfile_backups': 0, 'stdout_logfile_maxbytes': 0,