diff --git a/README.md b/README.md
index 9d6f0162920e5fdc33ef82c684673863cc37c6ae..f3fdd2e098cded111724d03174fdbff03a3fa645 100644
--- a/README.md
+++ b/README.md
@@ -20,7 +20,12 @@ It is important to note than blocks need preferably be executed from the top dow
 
 ## Visualizing our notebook
 
-The simplest way is to go to the [nbviewer](https://nbviewer.jupyter.org/) website and type `https://signolle.iiens.net/files/heldAndKarp.ipynb`
+The simplest way is to go to the [nbviewer](https://nbviewer.jupyter.org/) website and type 
+
+```
+https://signolle.iiens.net/files/heldAndKarp.ipynb
+```
+
 in the search bar.
 
 ![Screenshot of nbviewer ](images/nbviewer.png)