LiquidCrystalRus.cpp:16:9: error: ‘prog_uchar’ does not name a type
LiquidCrystalRus.cpp: In member function ‘virtual size_t LiquidCrystalRus::write(uint8_t)’:
LiquidCrystalRus.cpp:307:14: error: ‘utf_recode’ was not declared in this scope

#elif defined(__PROG_TYPES_COMPAT__)  /* !DOXYGEN */
// ...
typedef unsigned char prog_uchar __attribute__((__progmem__,deprecated("prog_uchar type is deprecated.")));
// ...
#endif

/**
   \ingroup avr_pgmspace
   \typedef prog_uchar
   \note DEPRECATED

   This typedef is now deprecated because the usage of the __progmem__ 
   attribute on a type is not supported in GCC. However, the use of the 
   __progmem__ attribute on a variable declaration is supported, and this is 
   now the recommended usage.

   The typedef is only visible if the macro __PROG_TYPES_COMPAT__
   has been defined before including <avr/pgmspace.h> (either by a
   #define directive, or by a -D compiler option.)

   Type of an "unsigned char" object located in flash ROM.
*/

diff --git a/Marlin/LiquidCrystalRus.cpp b/Marlin/LiquidCrystalRus.cpp
index 66bb370..9f3f5c0 100644
--- a/Marlin/LiquidCrystalRus.cpp
+++ b/Marlin/LiquidCrystalRus.cpp
@@ -1,3 +1,4 @@
+#define __PROG_TYPES_COMPAT__
 #include "LiquidCrystalRus.h"

 #include <stdio.h>
@@ -13,7 +14,7 @@

 // it is a russian alphabet translation
 // except 0401 --> 0xa2 = ╗, 0451 --> 0xb5
-PROGMEM prog_uchar utf_recode[] = 
+const PROGMEM prog_uchar utf_recode[] = 
        { 0x41,0xa0,0x42,0xa1,0xe0,0x45,0xa3,0xa4,0xa5,0xa6,0x4b,0xa7,0x4d,0x48,0x4f,
          0xa8,0x50,0x43,0x54,0xa9,0xaa,0x58,0xe1,0xab,0xac,0xe2,0xad,0xae,0x62,0xaf,0xb0,0xb1,
          0x61,0xb2,0xb3,0xb4,0xe3,0x65,0xb6,0xb7,0xb8,0xb9,0xba,0xbb,0xbc,0xbd,0x6f,