diff --git a/perception/tensorrt_yolox/config/yolox_s_plus_opt.param.yaml b/perception/tensorrt_yolox/config/yolox_s_plus_opt.param.yaml
index e24aced8c5337..72c36724b26c3 100644
--- a/perception/tensorrt_yolox/config/yolox_s_plus_opt.param.yaml
+++ b/perception/tensorrt_yolox/config/yolox_s_plus_opt.param.yaml
@@ -4,7 +4,7 @@
     # disable when sematic segmentation accuracy is good enough
     is_roi_overlap_segment: true
 
-    # minimum existence_probability of detected roi considered to replace segmentation 
+    # minimum existence_probability of detected roi considered to replace segmentation
     overlap_roi_score_threshold: 0.3
 
     # publish color mask for result visualization