diff --git a/wp-includes/functions-post.php b/wp-includes/functions-post.php
index 74a8ea065b..f9d036fada 100644
--- a/wp-includes/functions-post.php
+++ b/wp-includes/functions-post.php
@@ -932,7 +932,7 @@ function wp_upload_bits($name, $type, $bits) {
 	// Compute the URL
 	$url = $upload['url'] . "/$filename";
 
-	return array('file' => $new_file, 'url' => $url);
+	return array('file' => $new_file, 'url' => $url, 'error' => false);
 }
 
 ?>
diff --git a/xmlrpc.php b/xmlrpc.php
index bac38e11a6..f3edb64430 100644
--- a/xmlrpc.php
+++ b/xmlrpc.php
@@ -853,7 +853,7 @@ class wp_xmlrpc_server extends IXR_Server {
 		}
 
 		$upload = wp_upload_bits($name, $type, $bits);
-		if ( $upload['error'] !== false ) {
+		if ( ! empty($upload['error']) ) {
 			logIO('O', '(MW) Could not write file '.$name);
 			return new IXR_Error(500, 'Could not write file '.$name);
 		}