diff --git a/README.md b/README.md
index f0f3255..0e9f9b0 100644
--- a/README.md
+++ b/README.md
@@ -94,7 +94,9 @@ a Reverse proxy is needed.
 
 Whitout this, you can still access to consoles using CLI for Serial access :
 
+```sh
 lxc-attach <container>
+```
 
 and using a tool such as :