diff --git a/jass_preprocessing/doc/source/index.rst b/jass_preprocessing/doc/source/index.rst
index d85c2a115ff909c139b419671f9cd3b88adc236b..cee2dc0761c825e8091721aa4a8c36308409c8b9 100644
--- a/jass_preprocessing/doc/source/index.rst
+++ b/jass_preprocessing/doc/source/index.rst
@@ -37,10 +37,12 @@ In a folder that will contain the jass_preprocessing repository,
 execute the following lines:
 
 .. code-block:: shell
+
   git clone https://gitlab.pasteur.fr/statistical-genetics/JASS_Pre-processing.git
   cd JASS_Pre-processing/
   pip3 install ./jass_preprocessing/
 
+
 Preprocessing example
 =====================