diff --git a/include/libpldm/pdr.h b/include/libpldm/pdr.h
index 8112703..a20bb70 100644
--- a/include/libpldm/pdr.h
+++ b/include/libpldm/pdr.h
@@ -156,6 +156,8 @@
 /** @brief Remove all PDR records that belong to a remote terminus
  *
  *  @param[in] repo - opaque pointer acting as a PDR repo handle
+ *
+ *  If repo is NULL then there are no PDRs that can be removed.
  */
 void pldm_pdr_remove_remote_pdrs(pldm_pdr *repo);