diff --git a/autoware_launch/config/planning/scenario_planning/lane_driving/motion_planning/obstacle_cruise_planner/obstacle_cruise_planner.param.yaml b/autoware_launch/config/planning/scenario_planning/lane_driving/motion_planning/obstacle_cruise_planner/obstacle_cruise_planner.param.yaml
index dc314511a1..6826e78b57 100644
--- a/autoware_launch/config/planning/scenario_planning/lane_driving/motion_planning/obstacle_cruise_planner/obstacle_cruise_planner.param.yaml
+++ b/autoware_launch/config/planning/scenario_planning/lane_driving/motion_planning/obstacle_cruise_planner/obstacle_cruise_planner.param.yaml
@@ -87,7 +87,8 @@
         obstacle_traj_angle_threshold : 1.22 # [rad] = 70 [deg], yaw threshold of crossing obstacle against the nearest trajectory point for cruise or stop
 
       stop:
-        max_lat_margin: 0.3 # lateral margin between obstacle and trajectory band with ego's width
+        max_lat_margin: 0.3 # lateral margin between the obstacles and ego's footprint
+        max_lat_margin_against_unknown: -0.3 # lateral margin between the unknown obstacles and ego's footprint
         crossing_obstacle:
           collision_time_margin : 4.0 # time threshold of collision between obstacle adn ego for cruise or stop [s]