diff --git a/lib/rel.js b/lib/rel.js
index 0ca10dc..3ee6a3e 100644
--- a/lib/rel.js
+++ b/lib/rel.js
@@ -7,7 +7,8 @@ function relSitemapInject(data) {
if (!rel || data.match(/rel=['|"]?sitemap['|"]?/i)) return;
- const relSitemap = ``;
+ const relPath = typeof path === 'string' ? path : path[0];
+ const relSitemap = ``;
return data.replace(/(?!<\/head>).+?<\/head>/s, str => str.replace('', `${relSitemap}`));
}