diff --git a/src/Bundle/ChillCalendarBundle/Export/Export/CountCalendars.php b/src/Bundle/ChillCalendarBundle/Export/Export/CountCalendars.php
index 53be661a3..2b0488b61 100644
--- a/src/Bundle/ChillCalendarBundle/Export/Export/CountCalendars.php
+++ b/src/Bundle/ChillCalendarBundle/Export/Export/CountCalendars.php
@@ -100,7 +100,7 @@ class CountCalendars implements ExportInterface, GroupedExportInterface
         $qb = $this->calendarRepository->createQueryBuilder('cal');
 
         $qb->select('COUNT(cal.id) AS export_result');
-        $qb->join('cal.accompanyingPeriod', 'acp');
+        $qb->leftJoin('cal.accompanyingPeriod', 'acp');
 
         AccompanyingCourseExportHelper::addClosingMotiveExclusionClause($qb);