diff --git a/src/wp-admin/includes/meta-boxes.php b/src/wp-admin/includes/meta-boxes.php
index c26ced427a..50c6eafd91 100644
--- a/src/wp-admin/includes/meta-boxes.php
+++ b/src/wp-admin/includes/meta-boxes.php
@@ -1022,8 +1022,9 @@ function link_target_meta_box($link) { ?>
 function xfn_check( $class, $value = '', $deprecated = '' ) {
 	global $link;
 
-	if ( !empty( $deprecated ) )
-		_deprecated_argument( __FUNCTION__, '0.0.0' ); // Never implemented
+	if ( ! empty( $deprecated ) ) {
+		_deprecated_argument( __FUNCTION__, '2.5.0' ); // Never implemented
+	}
 
 	$link_rel = isset( $link->link_rel ) ? $link->link_rel : ''; // In PHP 5.3: $link_rel = $link->link_rel ?: '';
 	$rels = preg_split('/\s+/', $link_rel);