diff --git a/sphinx/source/page1.rst b/sphinx/source/page1.rst
index d6e35223defec078a5040b05c47922f4dc1df8e5..a6ae0228e0727a22232f68f961260ed666f0e92e 100644
--- a/sphinx/source/page1.rst
+++ b/sphinx/source/page1.rst
@@ -46,8 +46,8 @@ stable and complete version of Raspbian by using NOOBS (a simple-to-use operatin
 Once the OS has been installed, the 1-wire option and GPIO remote option must be deactivated via the
 Raspbian GUI settings menu. Failure to carry out this task may cause damage to the relay shield cards during measurements.
 
-
-
+Environnement installation
+****************************************** 
 
 Construction of the measurement board and connection to the Raspberry 
 **************************************************************************