diff --git a/drivers/serial/Makefile b/drivers/serial/Makefile
index c9e797e..de6fbab 100644
--- a/drivers/serial/Makefile
+++ b/drivers/serial/Makefile
@@ -25,18 +25,18 @@
 
 LIB	:= $(obj)libserial.a
 
-COBJS-y += atmel_usart.o
-COBJS-y += mcfuart.o
+COBJS-$(CONFIG_ATMEL_USART) += atmel_usart.o
+COBJS-$(CONFIG_MCFUART) += mcfuart.o
 COBJS-y += ns9750_serial.o
 COBJS-y += ns16550.o
-COBJS-y += s3c4510b_uart.o
+COBJS-$(CONFIG_DRIVER_S3C4510_UART) += s3c4510b_uart.o
 COBJS-y += serial.o
-COBJS-y += serial_max3100.o
+COBJS-$(CONFIG_MAX3100_SERIAL) += serial_max3100.o
 COBJS-y += serial_pl010.o
 COBJS-y += serial_pl011.o
-COBJS-y += serial_xuartlite.o
+COBJS-$(CONFIG_XILINX_UARTLITE) += serial_xuartlite.o
 COBJS-y += serial_sh.o
-COBJS-y += usbtty.o
+COBJS-$(CONFIG_USB_TTY) += usbtty.o
 
 COBJS	:= $(COBJS-y)
 SRCS	:= $(COBJS:.o=.c)
diff --git a/drivers/serial/atmel_usart.c b/drivers/serial/atmel_usart.c
index f35b997..f3b146c 100644
--- a/drivers/serial/atmel_usart.c
+++ b/drivers/serial/atmel_usart.c
@@ -17,7 +17,6 @@
  */
 #include <common.h>
 
-#ifdef CONFIG_ATMEL_USART
 #include <asm/io.h>
 #include <asm/arch/clk.h>
 #include <asm/arch/memory-map.h>
@@ -96,5 +95,3 @@
 {
 	return (usart3_readl(CSR) & USART3_BIT(RXRDY)) != 0;
 }
-
-#endif /* CONFIG_ATMEL_USART */
diff --git a/drivers/serial/mcfuart.c b/drivers/serial/mcfuart.c
index 5eb4f45..a1fcd05 100644
--- a/drivers/serial/mcfuart.c
+++ b/drivers/serial/mcfuart.c
@@ -29,8 +29,6 @@
 
 #include <common.h>
 
-#ifdef CONFIG_MCFUART
-
 #include <asm/immap.h>
 #include <asm/uart.h>
 
@@ -130,4 +128,3 @@
 
 	uart->ucr = UART_UCR_RX_ENABLED | UART_UCR_TX_ENABLED;
 }
-#endif				/* CONFIG_MCFUART */
diff --git a/drivers/serial/s3c4510b_uart.c b/drivers/serial/s3c4510b_uart.c
index ddcd591..aa378e1 100644
--- a/drivers/serial/s3c4510b_uart.c
+++ b/drivers/serial/s3c4510b_uart.c
@@ -45,8 +45,6 @@
 
 #include <common.h>
 
-#ifdef CONFIG_DRIVER_S3C4510_UART
-
 #include <asm/hardware.h>
 #include "s3c4510b_uart.h"
 
@@ -212,5 +210,3 @@
 	uart->m_ctrl.bf.sendBreak = 0;
 
 }
-
-#endif
diff --git a/drivers/serial/serial_max3100.c b/drivers/serial/serial_max3100.c
index 0611fc1..4abc271 100644
--- a/drivers/serial/serial_max3100.c
+++ b/drivers/serial/serial_max3100.c
@@ -26,8 +26,6 @@
 #include <common.h>
 #include <watchdog.h>
 
-#ifdef CONFIG_MAX3100_SERIAL
-
 DECLARE_GLOBAL_DATA_PTR;
 
 /**************************************************************/
@@ -298,5 +296,3 @@
 void serial_setbrg(void)
 {
 }
-
-#endif
diff --git a/drivers/serial/serial_xuartlite.c b/drivers/serial/serial_xuartlite.c
index 74546ce..00d0eaa 100644
--- a/drivers/serial/serial_xuartlite.c
+++ b/drivers/serial/serial_xuartlite.c
@@ -27,8 +27,6 @@
 #include <config.h>
 #include <asm/io.h>
 
-#ifdef	CONFIG_XILINX_UARTLITE
-
 #define RX_FIFO_OFFSET		0 /* receive FIFO, read only */
 #define TX_FIFO_OFFSET		4 /* transmit FIFO, write only */
 #define STATUS_REG_OFFSET	8 /* status register, read only */
@@ -77,5 +75,3 @@
 {
 	return (in_be32((u32 *) UARTLITE_STATUS) & SR_RX_FIFO_VALID_DATA);
 }
-
-#endif	/* CONFIG_MICROBLZE */
diff --git a/drivers/serial/usbtty.c b/drivers/serial/usbtty.c
index 2bc5c3c..e738c56 100644
--- a/drivers/serial/usbtty.c
+++ b/drivers/serial/usbtty.c
@@ -23,8 +23,6 @@
 
 #include <common.h>
 
-#ifdef CONFIG_USB_TTY
-
 #include <circbuf.h>
 #include <devices.h>
 #include "usbtty.h"
@@ -1007,6 +1005,3 @@
 	udc_irq();
 
 }
-
-
-#endif