diff --git a/README.rst b/README.rst
index 9db68bfab90844cdc9fb06a847b97c5f435e9173..30ef9190e5e4fcd3de128c40f486576aa391f308 100644
--- a/README.rst
+++ b/README.rst
@@ -24,7 +24,6 @@ Rapid Peptides Generator (RPG) is dedicated to predict proteases-induced cleavag
 
 
 
-
 Overview
 ========
 
@@ -39,10 +38,13 @@ Currently, 42 enzymes and chemicals are included in RPG. User can easily design
 RPG  follows the standards for software development with continuous integration on Gitlab (https://gitlab.pasteur.fr/nmaillet/rpg) and automatic on-line documentation (https://rapid-peptide-generator.readthedocs.io).
 
 
+
 Installation
 ============
 
-In order to install RPG, you can use **pip**::
+In order to install RPG, you can use **pip**:
+
+.. code-block:: none
 
     pip install rpg
 
@@ -52,6 +54,8 @@ This command installs RPG and its Python dependencies.
 Usage
 =====
 
-From the command line::
+From the command line:
+
+.. code-block:: none
 
     rpg --help