diff --git a/token.module b/token.module
index c36224a..df6f88d 100644
--- a/token.module
+++ b/token.module
@@ -91,10 +91,9 @@ function token_form_block_form_alter(&$form, FormStateInterface $form_state) {
     '#theme' => 'token_tree_link',
     '#token_types' => array(),
   );
+  $rendered_token_tree = \Drupal::service('renderer')->render($token_tree);
   $form['settings']['label']['#description'] = array(
-    '#theme' => 'token_tree_link',
-    '#token_types' => array(),
-    '#prefix' => t('This field supports tokens. @browse_tokens_link', array('@browse_tokens_link' => $token_tree))
+    '#prefix' => t('This field supports tokens. @browse_tokens_link', array('@browse_tokens_link' => $rendered_token_tree))
   );
   $form['settings']['label']['#element_validate'][] = 'token_element_validate';
   $form['settings']['label'] += array('#token_types' => array());