diff --git a/launch/tier4_perception_launch/launch/object_recognition/tracking/tracking.launch.xml b/launch/tier4_perception_launch/launch/object_recognition/tracking/tracking.launch.xml
index 9bc4aabc39b20..1975ad2d15eb9 100644
--- a/launch/tier4_perception_launch/launch/object_recognition/tracking/tracking.launch.xml
+++ b/launch/tier4_perception_launch/launch/object_recognition/tracking/tracking.launch.xml
@@ -14,6 +14,7 @@
   <arg name="mode" default="lidar" description="options: `camera_lidar_radar_fusion`, `camera_lidar_fusion`, `lidar_radar_fusion`, `lidar` or `radar`"/>
   <arg name="use_radar_tracking_fusion" default="false" description="use radar tracking fusion"/>
   <let name="use_radar_tracking_fusion" value="false" if="$(eval '&quot;$(var mode)&quot;!=&quot;camera_lidar_radar_fusion&quot;')"/>
+  <arg name="use_multi_channel_tracker_merger"/>
 
   <!-- External interface -->
   <let name="input/detection_input_channels" value="['detected_objects']"/>
diff --git a/launch/tier4_simulator_launch/launch/simulator.launch.xml b/launch/tier4_simulator_launch/launch/simulator.launch.xml
index 97b07410d108a..7dc33e0e82ea9 100644
--- a/launch/tier4_simulator_launch/launch/simulator.launch.xml
+++ b/launch/tier4_simulator_launch/launch/simulator.launch.xml
@@ -78,6 +78,7 @@
             <arg name="object_recognition_tracking_radar_object_tracker_node_param_path" value="$(var object_recognition_tracking_radar_object_tracker_node_param_path)"/>
             <arg name="object_recognition_tracking_object_merger_data_association_matrix_param_path" value="$(var object_recognition_tracking_object_merger_data_association_matrix_param_path)"/>
             <arg name="object_recognition_tracking_object_merger_node_param_path" value="$(var object_recognition_tracking_object_merger_node_param_path)"/>
+            <arg name="use_multi_channel_tracker_merger" value="false"/>
           </include>
         </group>
         <!-- prediction module -->