diff --git a/egw-pear/HTTP/WebDAV/Server.php b/egw-pear/HTTP/WebDAV/Server.php
index 1e9acde4ba..0d96e66f79 100644
--- a/egw-pear/HTTP/WebDAV/Server.php
+++ b/egw-pear/HTTP/WebDAV/Server.php
@@ -824,7 +824,7 @@ class HTTP_WebDAV_Server
             /* TODO right now the user implementation has to make sure
              collections end in a slash, this should be done in here
              by checking the resource attribute */
-            $href = $this->_mergePaths($this->_SERVER['SCRIPT_NAME'], $path);
+            $href = $this->_mergePaths($this->base_uri, $path);
 
             /* minimal urlencoding is needed for the resource path */
             $href = $this->_urlencode($href);