diff --git a/Documentation/mm/arch_pgtable_helpers.rst b/Documentation/mm/arch_pgtable_helpers.rst
index cbaee9e592410fe6a5f8bd378d201a124e55b7cc..fd2a19df884ed38c95913cf5e532c15f252ce412 100644
--- a/Documentation/mm/arch_pgtable_helpers.rst
+++ b/Documentation/mm/arch_pgtable_helpers.rst
@@ -94,7 +94,7 @@ PMD Page Table Helpers
 +---------------------------+--------------------------------------------------+
 | pmd_trans_huge            | Tests a Transparent Huge Page (THP) at PMD       |
 +---------------------------+--------------------------------------------------+
-| pmd_present               | Tests a valid mapped PMD                         |
+| pmd_present               | Tests whether pmd_page() points to valid memory  |
 +---------------------------+--------------------------------------------------+
 | pmd_young                 | Tests a young PMD                                |
 +---------------------------+--------------------------------------------------+