diff --git a/walker.taxonomy-single-term.php b/walker.taxonomy-single-term.php
index fc56ab9..affd506 100644
--- a/walker.taxonomy-single-term.php
+++ b/walker.taxonomy-single-term.php
@@ -10,7 +10,7 @@
  * @see wp_terms_checklist()
  * @since 0.1.2
  */
-class Taxonomy_Single_Term_Walker extends Walker {
+class Taxonomy_Single_Term_Walker extends \Walker {
 	public $tree_type = 'category';
 	public $db_fields = array( 'parent' => 'parent', 'id' => 'term_id' ); //TODO: decouple this