diff --git a/question/type/ddwtos/simpletest/testquestiontype.php b/question/type/ddwtos/simpletest/testquestiontype.php
index f8bfa87e9c6..4ef6567c5b5 100755
--- a/question/type/ddwtos/simpletest/testquestiontype.php
+++ b/question/type/ddwtos/simpletest/testquestiontype.php
@@ -62,6 +62,7 @@ class qtype_ddwtos_test extends UnitTestCase {
         $dd = new stdClass;
         $dd->id = 0;
         $dd->category = 0;
+        $dd->contextid = 0;
         $dd->parent = 0;
         $dd->questiontextformat = FORMAT_HTML;
         $dd->generalfeedbackformat = FORMAT_HTML;