diff --git a/u-boot/common/cmd_recovery.c b/u-boot/common/cmd_recovery.c
index 377d2866df..9bb2289f80 100644
--- a/u-boot/common/cmd_recovery.c
+++ b/u-boot/common/cmd_recovery.c
@@ -90,6 +90,7 @@ static int do_run_recovery(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
 	BLINK_LED(5);
 	//status_led_set(0, STATUS_LED_ON);
 
+	/* erase u-boot enviroment */
 	rc = run_command("erase 0x9f040000 +0x10000", 0);
 	if (rc < 0)
 		return env_failed();