diff --git a/src/wp-includes/media.php b/src/wp-includes/media.php
index c1dc3886f7..5aef552a3c 100644
--- a/src/wp-includes/media.php
+++ b/src/wp-includes/media.php
@@ -5056,9 +5056,10 @@ function wp_getimagesize( $filename, array &$image_info = null ) {
  *     An array of WebP image information.
  *
  *     @type array $size {
- *         @type int  $width  Image width.
- *         @type int  $height Image height.
- *         @type bool $type   The WebP type: one of 'lossy', 'lossless' or 'animated-alpha'.
+ *         @type int|false    $width  Image width on success, false on failure.
+ *         @type int|false    $height Image height on success, false on failure.
+ *         @type string|false $type   The WebP type: one of 'lossy', 'lossless' or 'animated-alpha'.
+ *                                    False on failure.
  *     }
  */
 function wp_get_webp_info( $filename ) {