diff --git a/src/bootloader/libsys_boot.h b/src/bootloader/libsys_boot.h
index 8804b44..cdeeeef 100644
--- a/src/bootloader/libsys_boot.h
+++ b/src/bootloader/libsys_boot.h
@@ -80,11 +80,8 @@
 #define	SYS_SPI_DATA					(SYS_IO_BASE + 0x2000C)
 #define	SYS_SPI_CTRL					(SYS_IO_BASE + 0x20010)
 
-#define	SYS_UART_STAT					(SYS_IO_BASE + 0x10004)
-#define	SYS_UART_BAUD					(SYS_IO_BASE + 0x10008)
-
-#define	SYS_FLASH_IO					0xA4000000
-#define	SYS_FLASH_MEM					0x00000000
+#define	SYS_FLASH_IO					FLASH_BASE_IO
+#define	SYS_FLASH_MEM					FLASH_BASE_MEM
 
 // RTC
 #define	SYS_TIMER_USEC					(SYS_IO_BASE + 0x8)