--- a/src/source/dev_guide/overring-feature.rst	Fri Dec 28 14:13:33 2018 +0100
+++ b/src/source/dev_guide/overring-feature.rst	Fri Dec 28 15:56:03 2018 +0100
@@ -8,18 +8,18 @@
 
 1) Clone the package repository
 
-.. code-block::
+.. code-block:: shell
 
 		hg clone http://hg.ztfy.org/pyams/<pyams_packages>
 
 2) Run Bootstrap script provided
 
-.. code-block::
+.. code-block:: shell
 
 		./bootstrap.py
 
 3) Execute buildout
 
-.. code-block::
+.. code-block:: shell
 
 	./bin/buildout