diff --git a/lib/renderer.js b/lib/renderer.js
index 469ccb5..878c271 100644
--- a/lib/renderer.js
+++ b/lib/renderer.js
@@ -104,10 +104,7 @@ function tokenizeEditor(editorElement: HTMLElement, preElement: HTMLPreElement):
  * @return {Node} the html template node containing the result
  */
 function internalRender(markdownText: string): Node {
-  // Remove the <!doctype> since otherwise marked will escape it
-  // https://github.com/chjj/marked/issues/354
-  let text = markdownText.replace(/^\s*<!doctype(\s+.*)?>\s*/i, '');
-  let html = DOMPurify.sanitize(marked(text, { breaks: true }));
+  let html = DOMPurify.sanitize(marked(markdownText, { breaks: true }));
   let template = document.createElement('template');
   template.innerHTML = html.trim();
   return template.content.cloneNode(true);