diff --git a/esp3d/bridge.h b/esp3d/bridge.h
index d789ad6d..f4589673 100644
--- a/esp3d/bridge.h
+++ b/esp3d/bridge.h
@@ -1,4 +1,5 @@
 /*
+  bridge.h - esp3d bridge serial/tcp class
 
   Copyright (c) 2014 Luc Lebosse. All rights reserved.