diff --git a/js/ui/calendar.js b/js/ui/calendar.js
index 2f1fac03b..b79045e8f 100644
--- a/js/ui/calendar.js
+++ b/js/ui/calendar.js
@@ -1198,6 +1198,10 @@ const EventMessage = new Lang.Class({
                 title = title + ELLIPSIS_CHAR;
         }
         return title;
+    },
+
+    canClose: function() {
+        return _isToday(this._date);
     }
 });