diff --git a/samples/boards/stm32/power_mgmt/serial_wakeup/src/main.c b/samples/boards/stm32/power_mgmt/serial_wakeup/src/main.c
index 8ba5aefed72..8d749c338c7 100644
--- a/samples/boards/stm32/power_mgmt/serial_wakeup/src/main.c
+++ b/samples/boards/stm32/power_mgmt/serial_wakeup/src/main.c
@@ -11,19 +11,16 @@
 #include <zephyr/sys/printk.h>
 #include <zephyr/sys/__assert.h>
 
-#define DEV_NAME DT_CHOSEN(zephyr_console)
-
 void main(void)
 {
-	static const struct device *dev;
+	const struct device *const dev =
+		DEVICE_DT_GET(DT_CHOSEN(zephyr_console));
 
-	dev = DEVICE_DT_GET(DEV_NAME);
-	if (dev < 0) {
-		printk("Failed to get device");
+	if (!device_is_ready(dev)) {
+		printk("Console device not ready");
+		return;
 	}
 
-	printk("Device ready\n");
-
 #if CONFIG_PM_DEVICE
 	/* In PM_DEVICE modes, enable device as a wakeup source will prevent
 	 * system to switch it off (clock off, set pins to sleep configuration, ...)