diff --git a/src/mkii.c b/src/mkii.c
index 0f7125a..0abde6a 100644
--- a/src/mkii.c
+++ b/src/mkii.c
@@ -335,8 +335,8 @@ int mkii_reboot_device(struct usb_device_info * dev) {
 
 	printf("Rebooting device...\n");
 
-	memcpy(msg->data, "reboot", sizeof("reboot")-1);
-	ret = mkii_send_receive(dev->udev, MKII_GET_DEVICE, msg, sizeof("reboot")-1, msg, sizeof(buf));
+	memcpy(msg->data, "reboot", sizeof("reboot"));
+	ret = mkii_send_receive(dev->udev, MKII_REBOOT, msg, sizeof("reboot"), msg, sizeof(buf));
 	if ( ret != 1 || msg->data[0] != 0 )
 		return -1;