diff --git a/drivers/tty/serial/Kconfig b/drivers/tty/serial/Kconfig
index cf9210db9fa917cd213559ec2c0cffd53c9f123b..40ddbe49a7e26966d93c0bd37ca3ece82b76fb30 100644
--- a/drivers/tty/serial/Kconfig
+++ b/drivers/tty/serial/Kconfig
@@ -218,7 +218,7 @@ config SERIAL_SAMSUNG_UARTS_4
 config SERIAL_SAMSUNG_UARTS
 	int
 	depends on PLAT_SAMSUNG
-	default 6 if ARCH_S5P6450
+	default 6 if CPU_S5P6450
 	default 4 if SERIAL_SAMSUNG_UARTS_4 || CPU_S3C2416
 	default 3
 	help