diff --git a/nice_phone_numbers.module b/nice_phone_numbers.module
index c3a3b4e..7f6dba1 100644
--- a/nice_phone_numbers.module
+++ b/nice_phone_numbers.module
@@ -50,7 +50,7 @@ function nice_phone_numbers_element_info() {
     '#pre_render' => array('form_pre_render_fieldset'),
     '#process' => array('nice_phone_number_form_element_process', 'form_process_fieldset'),
     '#element_validate' => array('nice_phone_number_form_element_validate'),
-    '#theme_wrappers' => array('fieldset', 'form_element'),
+    '#theme_wrappers' => array('form_element'),
     //'#extended' => FALSE,
     '#tree' => TRUE,
     '#attached' => array(