diff --git a/wp-includes/class-wp-embed.php b/wp-includes/class-wp-embed.php
index f83d280648..fbcd51713f 100644
--- a/wp-includes/class-wp-embed.php
+++ b/wp-includes/class-wp-embed.php
@@ -142,6 +142,10 @@ class WP_Embed {
 	public function shortcode( $attr, $url = '' ) {
 		$post = get_post();
 
+		if ( empty( $url ) && ! empty( $attr['src'] ) ) {
+			$url = $attr['src'];
+		}
+
 		if ( empty( $url ) )
 			return '';