diff --git a/src/wp-includes/class.wp-dependencies.php b/src/wp-includes/class.wp-dependencies.php
index b5683cb95e..081ced907b 100644
--- a/src/wp-includes/class.wp-dependencies.php
+++ b/src/wp-includes/class.wp-dependencies.php
@@ -202,7 +202,8 @@ class WP_Dependencies {
 	 * @since 2.6.0 Moved from `WP_Scripts`.
 	 *
 	 * @param string           $handle Name of the item. Should be unique.
-	 * @param string           $src    Full URL of the item, or path of the item relative to the WordPress root directory.
+	 * @param string|bool      $src    Full URL of the item, or path of the item relative to the WordPress root directory.
+	 *                                 If source is set to false, item is an alias of other items it depends on.
 	 * @param string[]         $deps   Optional. An array of registered item handles this item depends on. Default empty array.
 	 * @param string|bool|null $ver    Optional. String specifying item version number, if it has one, which is added to the URL
 	 *                                 as a query string for cache busting purposes. If version is set to false, a version
diff --git a/src/wp-includes/functions.wp-scripts.php b/src/wp-includes/functions.wp-scripts.php
index 5d9062aeef..3fdf33974c 100644
--- a/src/wp-includes/functions.wp-scripts.php
+++ b/src/wp-includes/functions.wp-scripts.php
@@ -140,7 +140,8 @@ function wp_add_inline_script( $handle, $data, $position = 'after' ) {
  * @since 4.3.0 A return value was added.
  *
  * @param string           $handle    Name of the script. Should be unique.
- * @param string           $src       Full URL of the script, or path of the script relative to the WordPress root directory.
+ * @param string|bool      $src       Full URL of the script, or path of the script relative to the WordPress root directory.
+ *                                    If source is set to false, script is an alias of other scripts it depends on.
  * @param array            $deps      Optional. An array of registered script handles this script depends on. Default empty array.
  * @param string|bool|null $ver       Optional. String specifying script version number, if it has one, which is added to the URL
  *                                    as a query string for cache busting purposes. If version is set to false, a version
diff --git a/src/wp-includes/functions.wp-styles.php b/src/wp-includes/functions.wp-styles.php
index ec791747c3..20acd58e9a 100644
--- a/src/wp-includes/functions.wp-styles.php
+++ b/src/wp-includes/functions.wp-styles.php
@@ -110,7 +110,8 @@ function wp_add_inline_style( $handle, $data ) {
  * @since 4.3.0 A return value was added.
  *
  * @param string           $handle Name of the stylesheet. Should be unique.
- * @param string           $src    Full URL of the stylesheet, or path of the stylesheet relative to the WordPress root directory.
+ * @param string|bool      $src    Full URL of the stylesheet, or path of the stylesheet relative to the WordPress root directory.
+ *                                 If source is set to false, stylesheet is an alias of other stylesheets it depends on.
  * @param array            $deps   Optional. An array of registered stylesheet handles this stylesheet depends on. Default empty array.
  * @param string|bool|null $ver    Optional. String specifying stylesheet version number, if it has one, which is added to the URL
  *                                 as a query string for cache busting purposes. If version is set to false, a version