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 98b20b51d..c5175c989 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
@@ -315,7 +315,7 @@ class App.UiElement.ticket_perform_action
       if attribute.value && attribute.value[groupAndAttribute]
         config['value'] = _.clone(attribute.value[groupAndAttribute]['value'])
       config.multiple = false
-      config.nulloption = false
+      config.nulloption = config.null
       if config.tag is 'checkbox'
         config.tag = 'select'
       tagSearch = "#{config.tag}_search"