diff --git a/lib/renderer.js b/lib/renderer.js
index fa701e6..91f7005 100644
--- a/lib/renderer.js
+++ b/lib/renderer.js
@@ -33,7 +33,7 @@ Renderer.prototype.listitem = function(text) {
 
 // Add id attribute to headings
 Renderer.prototype.heading = function(text, level) {
-  var transformOption = this.config.marked.modifyAnchors;
+  var transformOption = this.options.modifyAnchors;
   var id = anchorId(stripHTML(text), transformOption);
   var headingId = this._headingId;
 
@@ -56,7 +56,7 @@ if (!this.config.marked.autolink) {
   Renderer.prototype.link = function(href, title, text) {
     var prot;
 
-    if (this.config.marked.sanitize) {
+    if (this.options.sanitize) {
       try {
         prot = decodeURIComponent(unescape(href))
             .replace(/[^\w:]/g, '')