diff --git a/inc/caldav-POST.php b/inc/caldav-POST.php
index 301a4297..09b09fb4 100644
--- a/inc/caldav-POST.php
+++ b/inc/caldav-POST.php
@@ -83,8 +83,10 @@ function handle_freebusy_request( $ic ) {
       if ( $answer === false ) {
         $reply->CalDAVElement($response, "request-status", "3.7;Invalid Calendar User" );
         $reply->CalDAVElement($response, "calendar-data" );
+        $responses[] = $response;
         continue;
       }
+      
       foreach ( $answer as $a )
       {
         if ( $a === false ) {