diff --git a/admin-guide/configuration/package_updates.md b/admin-guide/configuration/package_updates.md
index 7525cba9..760ded84 100644
--- a/admin-guide/configuration/package_updates.md
+++ b/admin-guide/configuration/package_updates.md
@@ -4,9 +4,9 @@ The automatic updates are controlled in Hiera:
 
 | Hiera key                         | default  | comments                                                                      |
 |-----------------------------------|----------|-------------------------------------------------------------------------------|
-| base::automatic_updates::interval | weekly   |  valid are `daily`, `weekly` and `never` which disables the automatic updates |
-| base::automatic_updates::type     | security | `security` installs only security updates whereas `all` installs all updates  |
-| base::automatic_updates::exclude  | []       | list of packages not to update, wildcards like "*" are allowed                |
-| base::automatic_updates::kernel   | false    | define if new kernel packages also should be installed automatically          |
+| `base::automatic_updates::interval` | `weekly`   |  valid are `daily`, `weekly` and `never` which disables the automatic updates |
+| `base::automatic_updates::type`     | `security` | `security` installs only security updates whereas `all` installs all updates  |
+| `base::automatic_updates::exclude`  | `[]`       | list of packages not to update, wildcards like "*" are allowed                |
+| `base::automatic_updates::kernel`   | `false`    | define if new kernel packages also should be installed automatically          |
 
 Note that the updates run on midnight, for `weekly` from Sunday to Monday. There is no automatic reboot, e.g. for kernel updates.