diff --git a/types/origin.pp b/types/origin.pp
index 9a3b169..6c8ae99 100644
--- a/types/origin.pp
+++ b/types/origin.pp
@@ -1 +1,2 @@
+# @summary Validate that the given input is accepted as an `Unattended-Upgrade::Origin-Pattern`.
 type Unattended_upgrades::Origin = Pattern[/^(origin|codename|label|site|suite|component|archive|[oalcn])=[^,]+(,(origin|codename|label|site|suite|component|archive|[oalcn])=[^,]+)*/]