--- form_controller.module.orig	2009-11-19 12:42:39.000000000 +0100
+++ form_controller.module	2009-12-07 00:05:24.303125000 +0100
@@ -65,7 +65,7 @@ function form_controller_form_alter(&$fo
   if (!isset($form['#prefix'])) {
     $form['#prefix'] = '';
   }
-  $form['#prefix'] .= $output . $form['#prefix'];
+  $form['#prefix'] = $output . $form['#prefix'];
 }
 
 /**