diff --git a/wp-includes/post.php b/wp-includes/post.php
index b309ff75ed..b94916dc24 100644
--- a/wp-includes/post.php
+++ b/wp-includes/post.php
@@ -5073,8 +5073,20 @@ function get_post_format_strings() {
  * @return array The array of post format slugs.
  */
 function get_post_format_slugs() {
-	$slugs = array_keys( get_post_format_strings() );
-	return array_combine( $slugs, $slugs );
+	// 3.2-early: use array_combine() and array_keys( get_post_format_strings() )
+	$slugs = array(
+		'standard' => 'standard', // Special case. any value that evals to false will be considered standard
+		'aside'    => 'aside',
+		'chat'     => 'chat',
+		'gallery'  => 'gallery',
+		'link'     => 'link',
+		'image'    => 'image',
+		'quote'    => 'quote',
+		'status'   => 'status',
+		'video'    => 'video',
+		'audio'    => 'audio',
+	);
+	return $slugs;
 }
 
 /**