diff --git a/bioloid_controller_cm510/include/bioloid_controller_cm510_impl.h b/bioloid_controller_cm510/include/bioloid_controller_cm510_impl.h
index 289325646070ed519f9899e0e5131e5de6f17946..a485d50662a9226713199f5a474ea18d046f5e24 100644
--- a/bioloid_controller_cm510/include/bioloid_controller_cm510_impl.h
+++ b/bioloid_controller_cm510/include/bioloid_controller_cm510_impl.h
@@ -524,7 +524,6 @@ namespace bioloid_controller_cm510
         else if(frame_name==this->exp_gpio18_frame)
           exp_gpio_values[18]=threshold;
       }
-      std::cout << (int)exp_gpio_values[0] << "," << (int)exp_gpio_values[1] << "," << (int)exp_gpio_values[2] << "," << (int)exp_gpio_values[3] << "," << (int)exp_gpio_values[4] << "," << (int)exp_gpio_values[5] << std::endl;
     }
 
   template <class HardwareInterface>