diff --git a/include/libpldm/pdr.h b/include/libpldm/pdr.h
index 91b41de..25aa994 100644
--- a/include/libpldm/pdr.h
+++ b/include/libpldm/pdr.h
@@ -477,6 +477,9 @@
  *
  *  @param[in] parent    - opaque pointer acting as a handle to an entity parent
  *  @param[in] node      - pointer to the node of the pldm entity
+ *
+ *  @return True if the node is a child of parent, false otherwise, including if one or both of
+ *  parent or node are NULL.
  */
 bool pldm_is_current_parent_child(pldm_entity_node *parent, pldm_entity *node);