diff --git a/wp-includes/media.php b/wp-includes/media.php
index 861e6e27bf..da37f902c5 100644
--- a/wp-includes/media.php
+++ b/wp-includes/media.php
@@ -220,7 +220,7 @@ function image_downsize( $id, $size = 'medium' ) {
 	// If the file isn't an image, attempt to replace its URL with a rendered image from its meta.
 	// Otherwise, a non-image type could be returned.
 	if ( ! $is_image ) {
-		if ( ! empty( $meta['sizes'] ) ) {
+		if ( ! empty( $meta['sizes']['full'] ) ) {
 			$img_url          = str_replace( $img_url_basename, $meta['sizes']['full']['file'], $img_url );
 			$img_url_basename = $meta['sizes']['full']['file'];
 			$width            = $meta['sizes']['full']['width'];
diff --git a/wp-includes/version.php b/wp-includes/version.php
index 58aa3abcb9..91c4341332 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -13,7 +13,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '5.4-alpha-46770';
+$wp_version = '5.4-alpha-46772';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.