diff --git a/docs/sitemap.xml b/docs/sitemap.xml
index a7b3509..304ae3e 100644
--- a/docs/sitemap.xml
+++ b/docs/sitemap.xml
@@ -6,7 +6,7 @@ layout: null
   <url>
     <loc>{{ "/" | absolute_url }}</loc>
   </url>
-  {% assign seo_pages = site.pages | where_exp: "page", "page.layout == 'default' and page.sitemap != false" %}
+  {% assign seo_pages = site.pages | where: "layout", "default" | where_exp: "page", "page.sitemap != false" %}
   {% for page in seo_pages %}
   <url>
     <loc>{{ page.url | absolute_url }}</loc>