diff --git a/src/dynamixel_motor_group.h b/src/dynamixel_motor_group.h
index f9329a18cfbbdb7fa05e4d25edf77f3da5f0bc9e..4ac3d37b3af2cfa078a129c3c8355bac53d670e1 100644
--- a/src/dynamixel_motor_group.h
+++ b/src/dynamixel_motor_group.h
@@ -129,6 +129,7 @@ class CDynamixelMotorGroup
      *
      */
     std::vector<unsigned char> servo_id;
+  protected:
     /* Motion sequence attributes */
     /**
      * \brief 
@@ -155,7 +156,6 @@ class CDynamixelMotorGroup
      *
      */
     CMutex motion_access;
-  protected:
     /**
      * \brief
      *