--- a/thermferm/mqtt.h	Fri Apr 19 14:11:19 2024 +0200
+++ b/thermferm/mqtt.h	Fri Apr 19 20:56:55 2024 +0200
@@ -49,6 +49,7 @@
 void mqtt_connect(void);
 void mqtt_disconnect(void);
 
+char *global_json(void);
 char *unit_data(units_list *unit, bool birth);
 
 /**