diff --git a/webservice/soap/classes/class.ilSoapCourseAdministration.php b/webservice/soap/classes/class.ilSoapCourseAdministration.php
index 396ee64eecfd..d750dcb3a7ca 100644
--- a/webservice/soap/classes/class.ilSoapCourseAdministration.php
+++ b/webservice/soap/classes/class.ilSoapCourseAdministration.php
@@ -423,7 +423,7 @@ public function updateCourse($sid, $course_id, $xml)
         $md->deleteAll();
 
         include_once 'Modules/Course/classes/class.ilCourseParticipants.php';
-        ilCourseParticipants::_deleteAllEntries($tmp_course->getId());
+       // ilCourseParticipants::_deleteAllEntries($tmp_course->getId());
 
 
         include_once 'Modules/Course/classes/class.ilCourseWaitingList.php';