diff --git a/lib/notion/getPageProperties.js b/lib/notion/getPageProperties.js
index 4061632c..4ba4a399 100644
--- a/lib/notion/getPageProperties.js
+++ b/lib/notion/getPageProperties.js
@@ -71,7 +71,7 @@ async function getPageProperties(id, block, schema, authToken, tagOptions, siteI
   properties.status = properties.status[0]
 
   if (properties.type === 'Post') {
-    properties.slug = BLOG.POST_URL_PREFIX + '/' + (properties.slug ?? properties.id)
+    properties.slug = `${BLOG.POST_URL_PREFIX ? BLOG.POST_URL_PREFIX + '/' : ''}` + (properties.slug ?? properties.id)
   } else {
     properties.slug = (properties.slug ?? properties.id)
   }