diff --git a/src/mqtt_client_wrapper.cpp b/src/mqtt_client_wrapper.cpp
index 1c76914..561560e 100644
--- a/src/mqtt_client_wrapper.cpp
+++ b/src/mqtt_client_wrapper.cpp
@@ -39,7 +39,7 @@ void mqtt_client_thread_func()
 {
     while (true)
     {
-        const auto &cfg = g_app_config;
+        const auto &cfg = g_app_config.mqtt;
 
         mqtt_client = std::make_unique<MQTTClient>(cfg);
         mqtt_client->setConnectCallback(on_mqtt_connected);