diff --git a/launch/13-diffdrive.launch.py b/launch/13-diffdrive.launch.py
index f075c0e..0021ecf 100644
--- a/launch/13-diffdrive.launch.py
+++ b/launch/13-diffdrive.launch.py
@@ -68,23 +68,23 @@ def generate_launch_description():
     )
 
     load_joint_state_controller = ExecuteProcess(
-        cmd=['ros2', 'control', 'load_controller', '--set-state', 'start',
+        cmd=['ros2', 'control', 'load_controller', '--set-state', 'active',
              'joint_state_broadcaster'],
         output='screen'
     )
     load_head_controller = ExecuteProcess(
-        cmd=['ros2', 'control', 'load_controller', '--set-state', 'start',
+        cmd=['ros2', 'control', 'load_controller', '--set-state', 'active',
              'head_controller'],
         output='screen'
     )
     load_gripper_controller = ExecuteProcess(
-        cmd=['ros2', 'control', 'load_controller', '--set-state', 'start',
+        cmd=['ros2', 'control', 'load_controller', '--set-state', 'active',
              'gripper_controller'],
         output='screen'
     )
 
     load_dd_controller = ExecuteProcess(
-        cmd=['ros2', 'control', 'load_controller', '--set-state', 'start',
+        cmd=['ros2', 'control', 'load_controller', '--set-state', 'active',
              'diff_drive_base_controller'],
         output='screen'
     )