diff --git a/js/bootstrap-collapse.js b/js/bootstrap-collapse.js
index 8116f2255388bb397df4789008f34c4be0c74438..e54415eebceb7e211c98e0948b7a2f7ad2670aa2 100644
--- a/js/bootstrap-collapse.js
+++ b/js/bootstrap-collapse.js
@@ -150,6 +150,7 @@
           || e.preventDefault()
           || (href = $this.attr('href')) && href.replace(/.*(?=#[^\s]+$)/, '') //strip for ie7
         , option = $(target).data('collapse') ? 'toggle' : $this.data()
+      $('[data-toggle=collapse]').addClass('collapsed')
       $this[$(target).hasClass('in') ? 'addClass' : 'removeClass']('collapsed')
       $(target).collapse(option)
     })