diff --git a/samples/drivers/aio_comparator/prj.conf b/samples/drivers/aio_comparator/prj.conf
index 75e3351507a..e265c2305db 100644
--- a/samples/drivers/aio_comparator/prj.conf
+++ b/samples/drivers/aio_comparator/prj.conf
@@ -1,3 +1,4 @@
 CONFIG_STDOUT_CONSOLE=y
 CONFIG_PRINTK=y
 CONFIG_AIO_COMPARATOR=y
+CONFIG_SYS_LOG=y
diff --git a/samples/drivers/aio_comparator/src/main.c b/samples/drivers/aio_comparator/src/main.c
index b35787c34a5..4f30a7714a1 100644
--- a/samples/drivers/aio_comparator/src/main.c
+++ b/samples/drivers/aio_comparator/src/main.c
@@ -34,13 +34,8 @@
  *    The line "*** A0, AIN[10] triggered falling." should appear.
  */
 
-#if defined(CONFIG_STDOUT_CONSOLE)
-#include <stdio.h>
-#define PRINT           printf
-#else
-#include <misc/printk.h>
-#define PRINT           printk
-#endif
+#define SYS_LOG_LEVEL SYS_LOG_LEVEL_INFO
+#include <misc/sys_log.h>
 
 #include <zephyr.h>
 #include <stdint.h>
@@ -71,9 +66,8 @@ void cb(void *param)
 
 	aio_cmp_dev = device_get_binding("AIO_CMP_0");
 
-	PRINT("*** %s triggered %s.\n", &p->name,
-	      (p->pol == AIO_CMP_POL_RISE) ? "rising" : "falling"
-	);
+	SYS_LOG_INF("*** %s triggered %s.", &p->name,
+		    (p->pol == AIO_CMP_POL_RISE) ? "rising" : "falling");
 
 	if (p->pol == AIO_CMP_POL_RISE)
 		p->pol = AIO_CMP_POL_FALL;
@@ -95,7 +89,7 @@ void main(void)
 
 	aio_cmp_dev = device_get_binding("AIO_CMP_0");
 
-	PRINT("===== app started ========\n");
+	SYS_LOG_INF("===== app started ========");
 
 	for (i = 0; i < 4; i++) {
 		/* REF_A is to use AREF for reference */
@@ -103,12 +97,12 @@ void main(void)
 					cb_data.pol, cb_data.ref,
 					cb, &cb_data);
 		if (ret)
-			PRINT("ERROR registering callback for %s (%d)\n",
+			SYS_LOG_ERR("ERROR registering callback for %s (%d)",
 			      &cb_data.name, ret);
 	}
 
 	while (1) {
-		PRINT("... waiting for event! (%d)\n", ++cnt);
+		SYS_LOG_INF("... waiting for event! (%d)", ++cnt);
 
 		/* wait a while */
 		nano_task_timer_start(&timer, SLEEPTIME);