diff --git a/planning/obstacle_cruise_planner/config/obstacle_cruise_planner.param.yaml b/planning/obstacle_cruise_planner/config/obstacle_cruise_planner.param.yaml
index 55a87078f710f..8b6bcbe3d6cf3 100644
--- a/planning/obstacle_cruise_planner/config/obstacle_cruise_planner.param.yaml
+++ b/planning/obstacle_cruise_planner/config/obstacle_cruise_planner.param.yaml
@@ -228,7 +228,7 @@
           motorcycle: false
           bicycle: false
           pedestrian: false
-        limit_min_acc: # overwrite the deceleration limit, in usually, common_param.yaml/limit.min_acc is referred
+        limit_min_acc: # overwrite the deceleration limit, in usually, common_param.yaml/limit.min_acc is referred.
           unknown: -1.0
         limit_max_dist:
           unknown: 50.0