diff --git a/calendar/inc/class.calendar_uilist.inc.php b/calendar/inc/class.calendar_uilist.inc.php
index 852157363a..17fedf056f 100644
--- a/calendar/inc/class.calendar_uilist.inc.php
+++ b/calendar/inc/class.calendar_uilist.inc.php
@@ -418,6 +418,8 @@ class calendar_uilist extends calendar_ui
 			if ($is_private)
 			{
 				$event['class'] .= 'rowNoView ';
+				// Hide participants for private events
+				$event['parts'] = '';
 			}
 
 			$event['app'] = 'calendar';
diff --git a/calendar/js/et2_widget_event.js b/calendar/js/et2_widget_event.js
index c09a83f21c..a2c9b1c147 100644
--- a/calendar/js/et2_widget_event.js
+++ b/calendar/js/et2_widget_event.js
@@ -503,8 +503,10 @@ var et2_calendar_event = (function(){ "use strict"; return et2_valueWidget.exten
 				'<p style="margin: 2px 0px;">'+times+'</p>'+
 				(this.options.value.location ? '<p><span class="calendar_calEventLabel">'+this.egw().lang('Location') + '</span>:' + this.options.value.location+'</p>' : '')+
 				(cat_label ? '<p><span class="calendar_calEventLabel">'+this.egw().lang('Category') + '</span>:' + cat_label +'</p>' : '')+
-				'<p><span class="calendar_calEventLabel">'+this.egw().lang('Participants')+'</span>:<br />'+
-					(this.options.value.parts ? this.options.value.parts.replace("\n","<br />"):'')+'</p>'+
+				(this.options.value.parts ?
+					'<p><span class="calendar_calEventLabel">'+this.egw().lang('Participants')+'</span>:<br />'+
+						this.options.value.parts.replace("\n","<br />")+'</p>':''
+				)+
 			'</div>'+
 		'</div>';
 	},