diff --git a/README.md b/README.md
index 1bfc63ebd58541ab6e19ca00c1118b0651573b1d..68b9fac1b47a5f1bd182b472abc9c6422f3d7114 100644
--- a/README.md
+++ b/README.md
@@ -23,11 +23,12 @@ It's possible to:
 -  export the configuration in a file (json format)
 -  import the configuration from a file , it support the format of  the Modifyheaders plugin 
 
-
 The extension can be start and stop via the button on the top right.
 
 The rules are active in private window mode but you can't use the configuration window in this mode.
 
+If you choose debug mode, detail log messages are available in the debugging console of the browser.
+
 The code is opensource under Mozilla Public License 2.0