diff --git a/.ci/.autoRedirect b/.ci/.autoRedirect
index 0746648bbfdb2c12257719c841b0f6b012ffe576..d18e26b4299d6db22589b472e85bd92454cbb46d 100644
--- a/.ci/.autoRedirect
+++ b/.ci/.autoRedirect
@@ -15,8 +15,15 @@
         });
     }
     UrlExists('https://r3-core.pages.uni.lu/howto-cards-internal/index.html', function(status){
-        var pathArray = window.location.pathname.split('/');
-        var sub = pathArray[1];
+        var s = window.location.pathname;
+        var pathArray = s.split('/');
+
+        // cut the entire subdomain path
+        if (pathArray[0].length > 0) {
+            sub = s.substr(pathArray[0].length+1);
+        } else {
+            sub = '';
+        }
 
         if(status === 200){
             // internal pages