diff --git a/README.md b/README.md
index f60b184b..8a245fb5 100644
--- a/README.md
+++ b/README.md
@@ -63,7 +63,7 @@ ESP3D SPIFFS:
 
 
 ## Installation
-Please use the latest [ESP3D firmware](https://github.com/luc-github/ESP3D) and copy the index.html.gz file on root of SPIFFS, in theory ESP3D have a version of web-ui but it may not be the latest one
+Please use the latest [ESP3D firmware](https://github.com/luc-github/ESP3D/tree/devt) and copy the index.html.gz file on root of SPIFFS, in theory ESP3D have a version of web-ui but it may not be the latest one
 
 ## Contribution / development
 Check wiki section [Contribution/Development](https://github.com/luc-github/ESP3D-WEBUI/wiki/Compilation---Development)