diff --git a/wp-admin/setup-config.php b/wp-admin/setup-config.php
index 4a4c67cbcb..acd65e7aa5 100644
--- a/wp-admin/setup-config.php
+++ b/wp-admin/setup-config.php
@@ -5,6 +5,8 @@
  * The permissions for the base directory must allow for writing files in order
  * for the wp-config.php to be created using this page.
  *
+ * @internal This file must be parsable by PHP4.
+ *
  * @package WordPress
  * @subpackage Administration
  */
diff --git a/wp-includes/load.php b/wp-includes/load.php
index 73c9eb8aae..4e7c6923ca 100644
--- a/wp-includes/load.php
+++ b/wp-includes/load.php
@@ -2,7 +2,7 @@
 /**
  * These functions are needed to load WordPress.
  *
- * This file must be parsable by PHP4.
+ * @internal This file must be parsable by PHP4.
  *
  * @package WordPress
  */
diff --git a/wp-load.php b/wp-load.php
index 246e944fc8..8c23992f1d 100644
--- a/wp-load.php
+++ b/wp-load.php
@@ -13,6 +13,8 @@
  * directory to allow the WordPress directory to remain
  * untouched.
  *
+ * @internal This file must be parsable by PHP4.
+ *
  * @package WordPress
  */
 
diff --git a/wp-settings.php b/wp-settings.php
index e9462e3721..9b89b577a1 100644
--- a/wp-settings.php
+++ b/wp-settings.php
@@ -5,6 +5,8 @@
  *
  * Allows for some configuration in wp-config.php (see default-constants.php)
  *
+ * @internal This file must be parsable by PHP4.
+ *
  * @package WordPress
  */