diff --git a/docs/features/software-catalog/well-known-relations.md b/docs/features/software-catalog/well-known-relations.md
index bfcbcb780a..6d61847a15 100644
--- a/docs/features/software-catalog/well-known-relations.md
+++ b/docs/features/software-catalog/well-known-relations.md
@@ -99,11 +99,12 @@ A relation with a [Domain](descriptor-format.md#kind-domain),
 [System](descriptor-format.md#kind-system) or
 [Component](descriptor-format.md#kind-component) entity, typically from a
 [Component](descriptor-format.md#kind-component),
-[API](descriptor-format.md#kind-api), or
-[System](descriptor-format.md#kind-system).
+[API](descriptor-format.md#kind-api),
+[System](descriptor-format.md#kind-system), or
+[Domain](descriptor-format.md#kind-domain),
 
 These relations express that a component belongs to a larger component; a
-component, API or resource belongs to a system; or that a system is grouped
-under a domain.
+component, API or resource belongs to a system; that a system is grouped
+under a domain; or that a domain belongs to a larger domain.
 
 This relation is commonly based on `spec.system` or `spec.domain`.