diff --git a/samples/net/mqtt_publisher/src/main.c b/samples/net/mqtt_publisher/src/main.c
index ba5046448f5..9dded7c78de 100644
--- a/samples/net/mqtt_publisher/src/main.c
+++ b/samples/net/mqtt_publisher/src/main.c
@@ -11,7 +11,6 @@ LOG_MODULE_REGISTER(net_mqtt_publisher_sample, LOG_LEVEL_DBG);
 #include <net/socket.h>
 #include <net/mqtt.h>
 
-#include <sys/printk.h>
 #include <string.h>
 #include <errno.h>
 
@@ -118,7 +117,7 @@ static void wait(int timeout)
 {
 	if (nfds > 0) {
 		if (poll(fds, nfds, timeout) < 0) {
-			printk("poll error: %d\n", errno);
+			LOG_ERR("poll error: %d", errno);
 		}
 	}
 }
@@ -131,18 +130,17 @@ void mqtt_evt_handler(struct mqtt_client *const client,
 	switch (evt->type) {
 	case MQTT_EVT_CONNACK:
 		if (evt->result != 0) {
-			printk("MQTT connect failed %d\n", evt->result);
+			LOG_ERR("MQTT connect failed %d", evt->result);
 			break;
 		}
 
 		connected = true;
-		printk("[%s:%d] MQTT client connected!\n", __func__, __LINE__);
+		LOG_INF("MQTT client connected!");
 
 		break;
 
 	case MQTT_EVT_DISCONNECT:
-		printk("[%s:%d] MQTT client disconnected %d\n", __func__,
-		       __LINE__, evt->result);
+		LOG_INF("MQTT client disconnected %d", evt->result);
 
 		connected = false;
 		clear_fds();
@@ -151,23 +149,21 @@ void mqtt_evt_handler(struct mqtt_client *const client,
 
 	case MQTT_EVT_PUBACK:
 		if (evt->result != 0) {
-			printk("MQTT PUBACK error %d\n", evt->result);
+			LOG_ERR("MQTT PUBACK error %d", evt->result);
 			break;
 		}
 
-		printk("[%s:%d] PUBACK packet id: %u\n", __func__, __LINE__,
-				evt->param.puback.message_id);
+		LOG_INF("PUBACK packet id: %u", evt->param.puback.message_id);
 
 		break;
 
 	case MQTT_EVT_PUBREC:
 		if (evt->result != 0) {
-			printk("MQTT PUBREC error %d\n", evt->result);
+			LOG_ERR("MQTT PUBREC error %d", evt->result);
 			break;
 		}
 
-		printk("[%s:%d] PUBREC packet id: %u\n", __func__, __LINE__,
-		       evt->param.pubrec.message_id);
+		LOG_INF("PUBREC packet id: %u", evt->param.pubrec.message_id);
 
 		const struct mqtt_pubrel_param rel_param = {
 			.message_id = evt->param.pubrec.message_id
@@ -175,19 +171,19 @@ void mqtt_evt_handler(struct mqtt_client *const client,
 
 		err = mqtt_publish_qos2_release(client, &rel_param);
 		if (err != 0) {
-			printk("Failed to send MQTT PUBREL: %d\n", err);
+			LOG_ERR("Failed to send MQTT PUBREL: %d", err);
 		}
 
 		break;
 
 	case MQTT_EVT_PUBCOMP:
 		if (evt->result != 0) {
-			printk("MQTT PUBCOMP error %d\n", evt->result);
+			LOG_ERR("MQTT PUBCOMP error %d", evt->result);
 			break;
 		}
 
-		printk("[%s:%d] PUBCOMP packet id: %u\n", __func__, __LINE__,
-		       evt->param.pubcomp.message_id);
+		LOG_INF("PUBCOMP packet id: %u",
+			evt->param.pubcomp.message_id);
 
 		break;
 
@@ -243,8 +239,7 @@ static int publish(struct mqtt_client *client, enum mqtt_qos qos)
 #define RC_STR(rc) ((rc) == 0 ? "OK" : "ERROR")
 
 #define PRINT_RESULT(func, rc) \
-	printk("[%s:%d] %s: %d <%s>\n", __func__, __LINE__, \
-	       (func), rc, RC_STR(rc))
+	LOG_INF("%s: %d <%s>", (func), rc, RC_STR(rc))
 
 static void broker_init(void)
 {
@@ -411,7 +406,7 @@ static void publisher(void)
 {
 	int i, rc;
 
-	printk("attempting to connect: ");
+	LOG_INF("attempting to connect: ");
 	rc = try_to_connect(&client_ctx);
 	PRINT_RESULT("try_to_connect", rc);
 	SUCCESS_OR_EXIT(rc);
@@ -454,7 +449,7 @@ static void publisher(void)
 	rc = mqtt_input(&client_ctx);
 	PRINT_RESULT("mqtt_input", rc);
 
-	printk("\nBye!\n");
+	LOG_INF("Bye!");
 }
 
 void main(void)