diff --git a/lib/action.php b/lib/action.php
index 3d7d1d808a..4aa6ace778 100644
--- a/lib/action.php
+++ b/lib/action.php
@@ -362,7 +362,7 @@ class Action extends HTMLOutputter // lawsuit
      */
     function showBody()
     {
-        $this->elementStart('body', (common_current_user()) ? array('id' => $this->trimmed('action'),
+        $this->elementStart('body', (common_current_user()) ? array('id' => strtolower($this->trimmed('action')),
                                                                     'class' => 'user_in')
                             : array('id' => $this->trimmed('action')));
         $this->elementStart('div', array('id' => 'wrap'));