diff --git a/lib/usb_cdcacm.c b/lib/usb_cdcacm.c
index 9dbcb9e..00691fb 100644
--- a/lib/usb_cdcacm.c
+++ b/lib/usb_cdcacm.c
@@ -349,7 +349,7 @@ static void cdcacm_set_config(usbd_device *usbd_dev, uint16_t wValue)
 	
 void cdcacm_setup(void)
 {
-	//usb_disconnect(); // force re-enumerate (useful if there is a bootloader using another USB profile)
+	usb_disconnect(); // force re-enumerate (useful after a restart or if there is a bootloader using another USB profile)
 
 	/* initialize USB */
 	usb_device = usbd_init(&st_usbfs_v1_usb_driver, &device_descriptor, &config, usb_strings, 3, usbd_control_buffer, sizeof(usbd_control_buffer));