diff --git a/cpu/bf561/serial.h b/cpu/bf561/serial.h
index c1cbf36..647560c 100644
--- a/cpu/bf561/serial.h
+++ b/cpu/bf561/serial.h
@@ -49,8 +49,8 @@
 #include <asm/blackfin.h>
 
 #define SYNC_ALL	__asm__ __volatile__ ("ssync;\n")
-#define ACCESS_LATCH	*pUART_LCR |= UART_LCR_DLAB;
-#define ACCESS_PORT_IER	*pUART_LCR &= (~UART_LCR_DLAB);
+#define ACCESS_LATCH	*pUART_LCR |= DLAB;
+#define ACCESS_PORT_IER	*pUART_LCR &= (~DLAB);
 
 void serial_setbrg(void);
 static void local_put_char(char ch);