diff --git a/js/tests/unit/collapse.js b/js/tests/unit/collapse.js
index 01bc5adb96a7..e7083f56ddc9 100644
--- a/js/tests/unit/collapse.js
+++ b/js/tests/unit/collapse.js
@@ -515,13 +515,14 @@ $(function () {
   })
 
   QUnit.test('should not prevent event for input', function (assert) {
-    assert.expect(2)
+    assert.expect(3)
     var done = assert.async()
     var $target = $('<input type="checkbox" data-toggle="collapse" data-target="#collapsediv1" />').appendTo('#qunit-fixture')
 
     $('<div id="collapsediv1"/>')
       .appendTo('#qunit-fixture')
       .on('shown.bs.collapse', function () {
+        assert.ok($(this).hasClass('show'))
         assert.ok($target.attr('aria-expanded') === 'true')
         assert.ok($target.prop('checked'))
         done()