diff --git a/src/mqtt.c b/src/mqtt.c
index 944da32..50cfdba 100644
--- a/src/mqtt.c
+++ b/src/mqtt.c
@@ -1,6 +1,7 @@
 #include "mgos.h"
 #include "mgos_mqtt.h"
 #include "mgos_config.h"
+#include "mgos_ro_vars.h"
 #include "mqtt.h"
 #include "main.h"
 #include "frozen/frozen.h"