diff --git a/wp-includes/comment-functions.php b/wp-includes/comment-functions.php
index 76d3e42772..566d8efe6e 100644
--- a/wp-includes/comment-functions.php
+++ b/wp-includes/comment-functions.php
@@ -626,7 +626,7 @@ function pingback($content, $post_ID) {
 			// when set to true, this outputs debug messages by itself
 			$client->debug = false;
 			
-			if ( $client->query('pingback.ping', array($pagelinkedfrom, $pagelinkedto) ) )
+			if ( $client->query('pingback.ping', $pagelinkedfrom, $pagelinkedto ) )
 				add_ping( $post_ID, $pagelinkedto );
 			else
 				debug_fwrite($log, "Error.\n Fault code: ".$client->getErrorCode()." : ".$client->getErrorMessage()."\n");