Do not initialize in the header file.

diff --git a/Marlin/ultralcd.h b/Marlin/ultralcd.h
index c3bc94b7306ce9864f948840180007c7c00b0b29..72df26d1e030a725949c3142686c8731516442a8 100644 (file)
--- a/Marlin/ultralcd.h
+++ b/Marlin/ultralcd.h
@@ -13,7 +13,7 @@
   #define LCD_UPDATE_INTERVAL 100
   #define STATUSTIMEOUT 15000
   extern LiquidCrystal lcd;
-  extern volatile char buttons=0;  //the last checked buttons in a bit array.
+  extern volatile char buttons;  //the last checked buttons in a bit array.
   
   #ifdef NEWPANEL
     #define EN_C (1<<BLEN_C)