1 files changed, 4 insertions, 1 deletions
diff --git a/README.rst b/README.rst
index e4bf1c1..015031b 100644
--- a/README.rst
+++ b/README.rst
@@ -95,12 +95,15 @@ Installation
 Development
 -----------
 To ease development and tests, you may want to install this package in
-an **editable state**, instead of using the *virtual environment*::
+an **editable state**::
 
     $ cd fg21sim/
     $ pip3 install --user -r requirements.txt
     $ pip3 install --editable .
 
+In addition, setting the environment variable ``DEBUG_FG21SIM`` forces
+this package running with ``DEBUG`` logging level.
+
 
 Documentations
 --------------