diff --git a/simulator/simple_planning_simulator/launch/simple_planning_simulator.launch.py b/simulator/simple_planning_simulator/launch/simple_planning_simulator.launch.py
index 50c2c1a2ce49a..29d15e4470237 100644
--- a/simulator/simple_planning_simulator/launch/simple_planning_simulator.launch.py
+++ b/simulator/simple_planning_simulator/launch/simple_planning_simulator.launch.py
@@ -91,7 +91,7 @@ def launch_setup(context, *args, **kwargs):
             simulator_model_param,
             {
                 "initial_engage_state": LaunchConfiguration("initial_engage_state"),
-            }
+            },
         ],
         remappings=remappings,
     )