diff --git a/inc/caldav-REPORT.php b/inc/caldav-REPORT.php
index 00740cb6..8a327af6 100644
--- a/inc/caldav-REPORT.php
+++ b/inc/caldav-REPORT.php
@@ -205,7 +205,7 @@ function component_to_xml( $properties, $item ) {
     case 'VCARD':
       $displayname = $item->fn;
       $type = 'vcard';
-      $contenttype = 'text/x-vcard';
+      $contenttype = 'text/vcard';
       break;
   }
   if ( isset($properties['calendar-data']) || isset($properties['displayname']) ) {