diff --git a/turtlebot4_navigation/config/localization.yaml b/turtlebot4_navigation/config/localization.yaml
index 2a9c4b7..da3c1f1 100644
--- a/turtlebot4_navigation/config/localization.yaml
+++ b/turtlebot4_navigation/config/localization.yaml
@@ -1,6 +1,6 @@
 amcl:
   ros__parameters:
-    use_sim_time: True
+    use_sim_time: true
     alpha1: 0.2
     alpha2: 0.2
     alpha3: 0.2
@@ -41,15 +41,15 @@ amcl:
 
 map_server:
   ros__parameters:
-    use_sim_time: True
+    use_sim_time: true
     # Overridden in launch by the "map" launch configuration or provided default value.
     # To use in yaml, remove the default "map" value in the tb3_simulation_launch.py file & provide full path to map below.
     yaml_filename: ""
 
 map_saver:
   ros__parameters:
-    use_sim_time: True
+    use_sim_time: true
     save_map_timeout: 5.0
     free_thresh_default: 0.25
     occupied_thresh_default: 0.65
-    map_subscribe_transient_local: True
+    map_subscribe_transient_local: true