diff --git a/.vitepress/config.mts b/.vitepress/config.mts
index c743fd0..2371fb5 100644
--- a/.vitepress/config.mts
+++ b/.vitepress/config.mts
@@ -8,7 +8,7 @@ export default withMermaid({
     ['link', { rel: 'icon', href: '/favicon.ico' }]
   ],
 
-  base: process.env.PAGES_BASE ? '/' + process.env.PAGES_BASE : '',
+  base: typeof process.env.PAGES_BASE !== 'undefined' ? '/' + process.env.PAGES_BASE : '',
 
   description: "Platform Mesh - Building upon the Kubernetes API & Resource Model",