diff --git a/library/Icinga/Web/Form.php b/library/Icinga/Web/Form.php
index 770da128fe..0f34553e91 100644
--- a/library/Icinga/Web/Form.php
+++ b/library/Icinga/Web/Form.php
@@ -852,7 +852,7 @@ public function addSubmitButton()
                     'decorators'            => array(
                         'ViewHelper',
                         array('Spinner', array('separator' => '')),
-                        array('HtmlTag', array('tag' => 'div', 'class' => 'buttons'))
+                        array('HtmlTag', array('tag' => 'div', 'class' => 'control-group form-controls'))
                     )
                 )
             );