diff --git a/src/bootloader/boards/denano/board.c b/src/bootloader/boards/denano/board.c
index 735a897..747126d 100644
--- a/src/bootloader/boards/denano/board.c
+++ b/src/bootloader/boards/denano/board.c
@@ -10,9 +10,13 @@
 #include "../../../libsys/irq.h"
 #include "../../../libsys/uart.h"
 
-#ifdef WITH_DEBUGGER
-extern uart_if_t uart_if[];
+const uart_if_t uart_if[] =
+{
+	{(uint32_t*)SYS_UART0_STAT, (uint32_t*)SYS_UART0_DATA, (uint32_t*)SYS_UART0_BAUD},
+	{(uint32_t*)SYS_UART1_STAT, (uint32_t*)SYS_UART1_DATA, (uint32_t*)SYS_UART1_BAUD}
+};
 
+#ifdef WITH_DEBUGGER
 void dbg_putchar(char c)
 {
 	if (c == 0x0A)
diff --git a/src/bootloader/boards/ml402/board.c b/src/bootloader/boards/ml402/board.c
index 1667657..32cd04b 100644
--- a/src/bootloader/boards/ml402/board.c
+++ b/src/bootloader/boards/ml402/board.c
@@ -10,7 +10,14 @@
 #include "../../../libsys/irq.h"
 #include "../../../libsys/uart.h"
 
-extern uart_if_t uart_if[];
+// ---------------------------------------------------------------------------------
+// Uart
+// ---------------------------------------------------------------------------------
+const uart_if_t uart_if[] =
+{
+	{(uint32_t*)SYS_UART0_STAT, (uint32_t*)SYS_UART0_DATA, (uint32_t*)SYS_UART0_BAUD},
+	{(uint32_t*)SYS_UART1_STAT, (uint32_t*)SYS_UART1_DATA, (uint32_t*)SYS_UART1_BAUD}
+};
 
 void _dbg_writechar(uart_if_t const *pUart, char c)
 {