diff --git a/plugins/calendar/calendar_ui.js b/plugins/calendar/calendar_ui.js
index 20f6cf41..0280ccec 100644
--- a/plugins/calendar/calendar_ui.js
+++ b/plugins/calendar/calendar_ui.js
@@ -397,7 +397,7 @@ function rcube_calendar_ui(settings)
       if (event.valarms && event.alarms_text)
         $('#event-alarm').show().find('.event-text').html(Q(event.alarms_text).replace(',', ',<br>'));
       if (calendar.name)
-        $('#event-calendar').show().find('.event-text').text(calendar.name).addClass('cal-'+calendar.id);
+        $('#event-calendar').show().find('.event-text').html(Q(calendar.name)).addClass('cal-'+calendar.id);
       if (event.categories)
         $('#event-category').show().find('.event-text').text(event.categories).addClass('cat-'+String(event.categories).toLowerCase().replace(rcmail.identifier_expr, ''));
       if (event.free_busy)