diff --git a/inc/CalDAVPrincipal.php b/inc/CalDAVPrincipal.php
index 0c98cc4c..3034e30a 100644
--- a/inc/CalDAVPrincipal.php
+++ b/inc/CalDAVPrincipal.php
@@ -118,7 +118,7 @@ class CalDAVPrincipal
 
     if ( $path == '/' || $path == '' ) {
       dbg_error_log( "principal", "No useful path split possible" );
-      return false;
+      return $session->username;
     }
 
     $path_split = explode('/', $path );