diff --git a/pmg-installation.adoc b/pmg-installation.adoc
index 74613fe..86cd1ac 100644
--- a/pmg-installation.adoc
+++ b/pmg-installation.adoc
@@ -417,9 +417,16 @@ are needed in order to support the RAR archive format:
 
 * `libclamunrar` for detecting viruses in RAR archives.
 
-.sources.list.entry for `non-free`
+.Additional sources.list entry for `non-free`
 ----
 deb http://deb.debian.org/debian/ buster non-free
 deb http://security.debian.org/debian-security buster/updates non-free
 deb http://deb.debian.org/debian/ buster-updates non-free
 ----
+
+Then you can install the required packages with:
+
+----
+apt update
+apt install libclamunrar p7zip-rar
+----