diff --git a/core/modules/user/user.install b/core/modules/user/user.install
index 9b70e09..6182229 100644
--- a/core/modules/user/user.install
+++ b/core/modules/user/user.install
@@ -120,6 +120,8 @@ function user_schema() {
     ),
   );
 
+  // Table name is plural despite Drupal naming standards as 'user' is a
+  // reserved word in many databases.
   $schema['users'] = array(
     'description' => 'Stores user data.',
     'fields' => array(