diff --git a/app/assets/javascripts/app/controllers/_ui_element/ticket_perform_action.coffee b/app/assets/javascripts/app/controllers/_ui_element/ticket_perform_action.coffee
index 9d1322a9e..b12765ee8 100644
--- a/app/assets/javascripts/app/controllers/_ui_element/ticket_perform_action.coffee
+++ b/app/assets/javascripts/app/controllers/_ui_element/ticket_perform_action.coffee
@@ -36,7 +36,7 @@ class App.UiElement.ticket_perform_action
     item.find('.js-attributeSelector').prepend(selector)
 
     # add filter
-    item.find('.js-add').bind('click', (e) ->
+    item.find('.js-add').bind('click', (e) =>
       element = $(e.target).closest('.js-filterElement')
       elementClone = element.clone(true)
       element.after(elementClone)