diff --git a/main/coursecopy/classes/CourseBuilder.class.php b/main/coursecopy/classes/CourseBuilder.class.php
index bafe267029..071dd2c49a 100755
--- a/main/coursecopy/classes/CourseBuilder.class.php
+++ b/main/coursecopy/classes/CourseBuilder.class.php
@@ -26,6 +26,7 @@ require_once 'wiki.class.php';
 require_once 'Thematic.class.php';
 require_once 'Attendance.class.php';
 require_once 'Work.class.php';
+require_once 'QuizQuestionOption.class.php';
 
 /**
  * Class CourseBuilder