diff --git a/docs/docsite/rst/installation_guide/intro_installation.rst b/docs/docsite/rst/installation_guide/intro_installation.rst
index deeabd64478..3cd8e99434c 100644
--- a/docs/docsite/rst/installation_guide/intro_installation.rst
+++ b/docs/docsite/rst/installation_guide/intro_installation.rst
@@ -151,7 +151,7 @@ To configure the PPA on your machine and install Ansible run these commands:
 
     $ sudo apt update
     $ sudo apt install software-properties-common
-    $ sudo apt-add-repository --yes --update ppa:ansible/ansible
+    $ sudo add-apt-repository --yes --update ppa:ansible/ansible
     $ sudo apt install ansible
 
 .. note:: On older Ubuntu distributions, "software-properties-common" is called "python-software-properties". You may want to use ``apt-get`` instead of ``apt`` in older versions. Also, be aware that only newer distributions (in other words, 18.04, 18.10, and so on) have a ``-u`` or ``--update`` flag, so adjust your script accordingly.