diff --git a/samples/net/mqtt_sn_publisher/prj.conf b/samples/net/mqtt_sn_publisher/prj.conf
index 4138b38ce21..0103d3515d1 100644
--- a/samples/net/mqtt_sn_publisher/prj.conf
+++ b/samples/net/mqtt_sn_publisher/prj.conf
@@ -4,7 +4,6 @@ CONFIG_NET_UDP=y
 CONFIG_NET_IPV4=y
 CONFIG_NET_IPV6=n
 CONFIG_NET_SOCKETS=y
-CONFIG_POSIX_API=y
 CONFIG_ZVFS_OPEN_MAX=6
 CONFIG_NET_CONNECTION_MANAGER=y
 
diff --git a/samples/net/mqtt_sn_publisher/src/udp.c b/samples/net/mqtt_sn_publisher/src/udp.c
index 4f1dd74231a..be55b0c19ea 100644
--- a/samples/net/mqtt_sn_publisher/src/udp.c
+++ b/samples/net/mqtt_sn_publisher/src/udp.c
@@ -131,7 +131,8 @@ static void process_thread(void)
 	LOG_DBG("Parsing Broadcast IP " CONFIG_NET_SAMPLE_MQTT_SN_BROADCAST_IP);
 	bcaddr.sin_family = AF_INET;
 	bcaddr.sin_port = htons(CONFIG_NET_SAMPLE_MQTT_SN_BROADCAST_PORT);
-	err = inet_pton(AF_INET, CONFIG_NET_SAMPLE_MQTT_SN_BROADCAST_IP, &bcaddr.sin_addr);
+	err = zsock_inet_pton(AF_INET, CONFIG_NET_SAMPLE_MQTT_SN_BROADCAST_IP,
+			      &bcaddr.sin_addr);
 	__ASSERT(err == 1, "inet_pton() failed %d", err);
 
 	LOG_INF("Waiting for connection...");
@@ -152,7 +153,7 @@ static void process_thread(void)
 		LOG_DBG("Parsing Broadcast IP %s", SAMPLE_GW_IP);
 		gwaddr.sin_family = AF_INET;
 		gwaddr.sin_port = htons(CONFIG_NET_SAMPLE_MQTT_SN_GATEWAY_PORT);
-		err = inet_pton(AF_INET, SAMPLE_GW_IP, &gwaddr.sin_addr);
+		err = zsock_inet_pton(AF_INET, SAMPLE_GW_IP, &gwaddr.sin_addr);
 		__ASSERT(err == 1, "inet_pton() failed %d", err);
 		struct mqtt_sn_data gwaddr_data = {.data = (uint8_t *)&bcaddr,
 						   .size = sizeof(struct sockaddr)};