diff --git a/lib/CPUs/MIPS/bsp/examples/bootloader/libsys_boot.h b/lib/CPUs/MIPS/bsp/examples/bootloader/libsys_boot.h
index c075658..c5645cc 100644
--- a/lib/CPUs/MIPS/bsp/examples/bootloader/libsys_boot.h
+++ b/lib/CPUs/MIPS/bsp/examples/bootloader/libsys_boot.h
@@ -31,6 +31,7 @@
 #define	sys_usb_addr	0xA0020008
 #define	sys_usb_status	0xA002000C
 #define	sys_flash_io	0xA4000000
+#define	sys_flash_mem	0x00000000
 
 // MIPS specific
 UINT32 CP0_SR_read(void);