From bd0967ad87ea5eec174fe1a8d4f6aeef428b49da Mon Sep 17 00:00:00 2001
From: Scott Lahteine <github@thinkyhead.com>
Date: Wed, 28 Feb 2018 03:26:28 -0600
Subject: [PATCH] Fix BTN_BACK

Followup to #9835
---
 Marlin/src/lcd/ultralcd.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Marlin/src/lcd/ultralcd.h b/Marlin/src/lcd/ultralcd.h
index 87ad3ef08f..c9373fd0b4 100644
--- a/Marlin/src/lcd/ultralcd.h
+++ b/Marlin/src/lcd/ultralcd.h
@@ -121,7 +121,7 @@
 
     #if BUTTON_EXISTS(BACK)
       #define BLEN_D 3
-      #define EN_D BIT(BLEN_D)
+      #define EN_D _BV(BLEN_D)
       #define LCD_BACK_CLICKED (buttons & EN_D)
     #endif