diff --git a/project/Core/Src/mqtt_application.c b/project/Core/Src/mqtt_application.c
index f648725..96de1dc 100644
--- a/project/Core/Src/mqtt_application.c
+++ b/project/Core/Src/mqtt_application.c
@@ -78,14 +78,12 @@ static void mqtt_pub_request_cb(void* arg, err_t result) {
 static void publish_data(mqtt_client_t* client, void* arg) {
     char pub_payload[200] = {0};
     err_t err;
-    u8_t qos = PUBLISH_QOS;
-    u8_t retain = PUBLISH_RETAIN;
 
     LOG_DEBUG(TAG, "Entering publish");
 
     create_publish_string("*.bmp", pub_payload,sizeof(pub_payload));
 
-    err = mqtt_publish(client, "getImageList", pub_payload, strlen(pub_payload), qos, retain, mqtt_pub_request_cb, arg);
+    err = mqtt_publish(client, "getImageList", pub_payload, strlen(pub_payload), PUBLISH_QOS, PUBLISH_RETAIN, mqtt_pub_request_cb, arg);
     if (err != ERR_OK) {
         LOG_DEBUG(TAG, "Publish err: %d", err);
     }
@@ -93,7 +91,7 @@ static void publish_data(mqtt_client_t* client, void* arg) {
     pub_payload[0] = '\0';
     create_publish_string("*.gif", pub_payload, sizeof(pub_payload));
 
-    err = mqtt_publish(client, "getImageList", pub_payload, strlen(pub_payload), qos, retain, mqtt_pub_request_cb, arg);
+    err = mqtt_publish(client, "getImageList", pub_payload, strlen(pub_payload), PUBLISH_QOS, PUBLISH_RETAIN, mqtt_pub_request_cb, arg);
     if (err != ERR_OK) {
         LOG_DEBUG(TAG, "Publish err: %d", err);
     }