diff --git a/project/Core/Inc/mqtt_application.h b/project/Core/Inc/mqtt_application.h
index 117a893..59bbcbe 100644
--- a/project/Core/Inc/mqtt_application.h
+++ b/project/Core/Inc/mqtt_application.h
@@ -9,6 +9,8 @@
 
 /**
  *  @brief Initialize MQTT application
+ *
+ *  @output returns 1 if the init failed to create a client and start an MQTT connection
  */
 uint8_t mqtt_application_init(void);