diff --git a/autoware_launch/config/planning/preset/default_preset.yaml b/autoware_launch/config/planning/preset/default_preset.yaml
index fdc31d07db..d13b42723d 100644
--- a/autoware_launch/config/planning/preset/default_preset.yaml
+++ b/autoware_launch/config/planning/preset/default_preset.yaml
@@ -55,7 +55,7 @@ launch:
       default: "true"
   - arg:
       name: launch_merge_from_private_module
-      default: "true"
+      default: "false"
   - arg:
       name: launch_blind_spot_module
       default: "true"