diff --git a/project/Core/Src/mug.c b/project/Core/Src/mug.c
index 0d7f377..b6d20c9 100644
--- a/project/Core/Src/mug.c
+++ b/project/Core/Src/mug.c
@@ -23,6 +23,11 @@
 #define PRINT_XPOS 50
 #define PRINT_YPOS 50
 #define MAX_FILES 20
+#define SERVER_IP4_A 192
+#define SERVER_IP4_B 168
+#define SERVER_IP4_C 69
+#define SERVER_IP4_D 11
+#define SERVER_PORT 1883
 
 typedef enum input_topic {
     set_text,
@@ -267,8 +272,8 @@ static void mosquitto_connect(mqtt_client_t* client) {
 
     ci.client_id = "STM32";
     ip_addr_t server_ip;
-    IP4_ADDR(&server_ip, 192, 168, 69, 11);
-    uint16_t server_port = 1883;
+    IP4_ADDR(&server_ip, SERVER_IP4_A, SERVER_IP4_B, SERVER_IP4_C, SERVER_IP4_D);
+    uint16_t server_port = SERVER_PORT;
     err = mqtt_client_connect(client, &server_ip, server_port, mqtt_connection_cb, 0, &ci);
     if (err != ERR_OK) {
         LOG_DEBUG(TAG, "mqtt_connect return %d", err);