diff --git a/autoware_launch/config/planning/scenario_planning/lane_driving/behavior_planning/behavior_velocity_planner/blind_spot.param.yaml b/autoware_launch/config/planning/scenario_planning/lane_driving/behavior_planning/behavior_velocity_planner/blind_spot.param.yaml
index 0950ece4ae..7bd7d88230 100644
--- a/autoware_launch/config/planning/scenario_planning/lane_driving/behavior_planning/behavior_velocity_planner/blind_spot.param.yaml
+++ b/autoware_launch/config/planning/scenario_planning/lane_driving/behavior_planning/behavior_velocity_planner/blind_spot.param.yaml
@@ -8,4 +8,5 @@
       max_future_movement_time: 10.0 # [second]
       threshold_yaw_diff: 0.523 # [rad]
       adjacent_extend_width: 1.5 # [m]
+      opposite_adjacent_extend_width: 1.5 # [m]
       enable_rtc: false # if true, the scene modules should be approved by (request to cooperate)rtc function. if false, the module can be run without approval from rtc.