diff --git a/mod/lti/locallib.php b/mod/lti/locallib.php
index 7668e676631..627118a5ef0 100644
--- a/mod/lti/locallib.php
+++ b/mod/lti/locallib.php
@@ -4398,7 +4398,7 @@ function lti_load_cartridge($url, $map, $propertiesmap = array()) {
     libxml_clear_errors();
 
     $document = new DOMDocument();
-    @$document->loadXML($response, LIBXML_DTDLOAD | LIBXML_DTDATTR);
+    @$document->loadXML($response, LIBXML_NONET);
 
     $cartridge = new DomXpath($document);