diff --git a/ESP32-IDF_Temperture-Node-v2/main/hello_world_main.c b/ESP32-IDF_Temperture-Node-v2/main/hello_world_main.c
index ee08c510d..92096e959 100644
--- a/ESP32-IDF_Temperture-Node-v2/main/hello_world_main.c
+++ b/ESP32-IDF_Temperture-Node-v2/main/hello_world_main.c
@@ -21,6 +21,8 @@
 #include "bme280.h"
 #include "config.h"
 
+#include "mqttronix.h"
+
 static const char *TAG = "esp32 node";
 
 // The three variables for storing the sensor readings (float for decimals)