From 8af3c04e7d06cdc858f945e5661b06fe948aaba2 Mon Sep 17 00:00:00 2001
From: Scott Lahteine <github@thinkyhead.com>
Date: Wed, 28 Feb 2018 03:27:36 -0600
Subject: [PATCH] Fix BTN_BACK

Followup to #9836
---
 Marlin/ultralcd.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Marlin/ultralcd.h b/Marlin/ultralcd.h
index 2ddf4b6f0..e8aa9dc48 100644
--- a/Marlin/ultralcd.h
+++ b/Marlin/ultralcd.h
@@ -117,7 +117,7 @@
 
     #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