diff --git a/HACKING.md b/HACKING.md
index 33a1147c7..d69b85f50 100644
--- a/HACKING.md
+++ b/HACKING.md
@@ -14,11 +14,11 @@ can install latest versions of Git, Vagrant and VirtualBox.
    ```bash
    $ sudo apt install git virtualbox vagrant
    ```
-   
+
    For some distro you might need to add Oracle's VirtualBox source
    (https://download.virtualbox.org/virtualbox/debian) to apt's sources list
    (typically in /etc/apt/sources.list file) and its key:
-   
+
    ```bash
    $ sudo wget -q https://www.virtualbox.org/download/oracle_vbox_2016.asc -O- | sudo apt-key add -
    ```