diff --git a/firmware/0x00000.bin b/firmware/0x00000.bin
index 557516b..6a584f7 100644
Binary files a/firmware/0x00000.bin and b/firmware/0x00000.bin differ
diff --git a/firmware/0x10000.bin b/firmware/0x10000.bin
index c2eff1e..640ca1a 100644
Binary files a/firmware/0x10000.bin and b/firmware/0x10000.bin differ
diff --git a/user/user_config.h b/user/user_config.h
index 8d2d159..37fd3a4 100644
--- a/user/user_config.h
+++ b/user/user_config.h
@@ -28,7 +28,7 @@
 // MQTT_BUF_SIZE is the max. size of pending inbound messages for one connection
 // QUEUE_BUFFER_SIZE is the max. size of all pending outbound messages for one connection 
 //
-#define MQTT_BUF_SIZE   1024
+#define MQTT_BUF_SIZE   2048
 #define QUEUE_BUFFER_SIZE 2048
 
 #define MQTT_KEEPALIVE    120  /*seconds*/