diff --git a/CRM/Report/Form/Event/ParticipantListCount.php b/CRM/Report/Form/Event/ParticipantListCount.php
index 3c0d43800456261dd0fb3acfa80745395ad01525..256c54ca51f90ac738f60796fdec2e43922307e5 100644
--- a/CRM/Report/Form/Event/ParticipantListCount.php
+++ b/CRM/Report/Form/Event/ParticipantListCount.php
@@ -36,7 +36,8 @@
 class CRM_Report_Form_Event_ParticipantListCount extends CRM_Report_Form_Event {
 
   protected $_summary = NULL;
-
+  protected $_groupFilter = TRUE;
+  protected $_tagFilter = TRUE;
   protected $_customGroupExtends = array(
     'Participant',
     'Event',
diff --git a/CRM/Report/Form/Event/ParticipantListing.php b/CRM/Report/Form/Event/ParticipantListing.php
index cc86cb61264490ebf4825764a6e15c2205a101ab..8a61e75f45275568a0492451d90e7581e0396301 100644
--- a/CRM/Report/Form/Event/ParticipantListing.php
+++ b/CRM/Report/Form/Event/ParticipantListing.php
@@ -39,6 +39,8 @@ class CRM_Report_Form_Event_ParticipantListing extends CRM_Report_Form_Event {
 
   protected $_contribField = FALSE;
   protected $_lineitemField = FALSE;
+  protected $_groupFilter = TRUE;
+  protected $_tagFilter = TRUE;
 
   protected $_customGroupExtends = array('Participant', 'Contact', 'Individual', 'Event');