diff -Naur gcc-4.5.2-old/gcc/config/avr/avr-devices.c gcc-4.5.2/gcc/config/avr/avr-devices.c
--- gcc-4.5.2-old/gcc/config/avr/avr-devices.c	2011-02-14 14:43:04.000000000 +0000
+++ gcc-4.5.2/gcc/config/avr/avr-devices.c	2011-02-14 14:46:48.000000000 +0000
@@ -187,7 +187,7 @@
   { "m3001b",               ARCH_AVR51, "__AVR_M3001B__",           0, 0x1000, "m3000f" },
     /* 3-Byte PC.  */
   { "avr6",                 ARCH_AVR6, NULL,                        0, 0x0200, "m2561" },
-  { "atmega2560",           ARCH_AVR6, "__AVR_ATmega2560__",        0, 0x0200, "m2561" },
+  { "atmega2560",           ARCH_AVR6, "__AVR_ATmega2560__",        0, 0x0200, "m2560" },
   { "atmega2561",           ARCH_AVR6, "__AVR_ATmega2561__",        0, 0x0200, "m2561" },
     /* Assembler only.  */
   { "avr1",                 ARCH_AVR1, NULL,                        0, 0x0060, "s1200" },