--- a/main/task_mqtt.c	Tue Oct 08 12:00:31 2019 +0200
+++ b/main/task_mqtt.c	Tue Oct 08 12:55:23 2019 +0200
@@ -74,7 +74,7 @@
 {
     char        *tmp;
 
-    tmp = xstrcpy((char *)"mbv1.0/pressure/");
+    tmp = xstrcpy((char *)"mbv1.0/co2meter/");
     tmp = xstrcat(tmp, msgtype);
     tmp = xstrcat(tmp, (char *)"/");
     tmp = xstrcat(tmp, config.hostname);