diff --git a/drivers/serial/serial_pl01x.c b/drivers/serial/serial_pl01x.c
index 7449e9b..f546835 100644
--- a/drivers/serial/serial_pl01x.c
+++ b/drivers/serial/serial_pl01x.c
@@ -27,8 +27,7 @@
 
 DECLARE_GLOBAL_DATA_PTR;
 
-#ifndef CONFIG_DM_SERIAL
-
+#if !CONFIG_IS_ENABLED(DM_SERIAL)
 static volatile unsigned char *const port[] = CFG_PL01x_PORTS;
 static enum pl01x_type pl01x_type __section(".data");
 static struct pl01x_regs *base_regs __section(".data");
@@ -186,7 +185,7 @@
 	return 0;
 }
 
-#ifndef CONFIG_DM_SERIAL
+#if !CONFIG_IS_ENABLED(DM_SERIAL)
 static void pl01x_serial_init_baud(int baudrate)
 {
 	int clock = 0;
@@ -273,11 +272,7 @@
 {
 	return &pl01x_serial_drv;
 }
-
-#endif /* nCONFIG_DM_SERIAL */
-
-#ifdef CONFIG_DM_SERIAL
-
+#else
 int pl01x_serial_setbrg(struct udevice *dev, int baudrate)
 {
 	struct pl01x_serial_plat *plat = dev_get_plat(dev);