diff --git a/wp-includes/category-template.php b/wp-includes/category-template.php
index 59c5947cff..9f5031a507 100644
--- a/wp-includes/category-template.php
+++ b/wp-includes/category-template.php
@@ -62,6 +62,9 @@ function get_category_link( $category_id ) {
 			return $category;
 		$category_nicename = $category->slug;
 
+		if ( $parent == $category_id ) // recursive recursion
+			$category->parent = 0;
+
 		if ( $parent = $category->parent )
 			$category_nicename = get_category_parents( $parent, false, '/', true ) . $category_nicename;