diff --git a/core/includes/form.inc b/core/includes/form.inc
index 9aa8be9..0e570d0 100644
--- a/core/includes/form.inc
+++ b/core/includes/form.inc
@@ -3796,11 +3796,13 @@ function form_process_vertical_tabs($element, &$form_state) {
  */
 function theme_vertical_tabs($variables) {
   $element = $variables['element'];
-  // Add required JavaScript and Stylesheet.
-  drupal_add_library('system', 'drupal.vertical-tabs');
+  if (!empty($element['#children'])) {
+    // Add required JavaScript and Stylesheet.
+    drupal_add_library('system', 'drupal.vertical-tabs');
 
-  $output = '<h2 class="element-invisible">' . t('Vertical Tabs') . '</h2>';
-  $output .= '<div class="vertical-tabs-panes">' . $element['#children'] . '</div>';
+    $output = '<h2 class="element-invisible">' . t('Vertical Tabs') . '</h2>';
+    $output .= '<div class="vertical-tabs-panes">' . $element['#children'] . '</div>';
+  }
   return $output;
 }