diff --git a/assets/js/app/post.js b/assets/js/app/post.js
index c3f2524..abdf14b 100644
--- a/assets/js/app/post.js
+++ b/assets/js/app/post.js
@@ -1,3 +1,5 @@
+const Routing = require('./routing')
+
 const Post = function(w) {
     this.window = w;
 }
@@ -48,7 +50,7 @@ Post.prototype.commentsEvents = function() {
             previewRender.innerHTML = '<p>Chargement en cours…</p>';
         }
 
-        var content = document.querySelector('#comment_content').value;
+        var content = document.querySelector('#user_comment_content').value;
         var httpRequest = new XMLHttpRequest();
 
         httpRequest.onreadystatechange = function(data) {
@@ -59,7 +61,7 @@ Post.prototype.commentsEvents = function() {
             }
         };
 
-        httpRequest.open('POST', Routing.generate('api_comment_preview'));
+        httpRequest.open('POST', Routing.generate('api_blog_comment_preview'));
         httpRequest.setRequestHeader(
             'Content-Type',
             'application/x-www-form-urlencoded'
diff --git a/public/js/fos_js_routes.json b/public/js/fos_js_routes.json
index 1003fe6..f2bc483 100644
--- a/public/js/fos_js_routes.json
+++ b/public/js/fos_js_routes.json
@@ -1 +1 @@
-{"base_url":"","routes":{"blog_tech_form_without_javascript":{"tokens":[["text","\/nojs"]],"defaults":[],"requirements":[],"hosttokens":[["text","local.deblan"]],"methods":[],"schemes":[]}},"prefix":"","host":"localhost","port":"","scheme":"http","locale":[]}
\ No newline at end of file
+{"base_url":"","routes":{"api_blog_comment_preview":{"tokens":[["text","\/api\/blog\/comment\/preview"]],"defaults":[],"requirements":[],"hosttokens":[],"methods":[],"schemes":[]},"blog_tech_form_without_javascript":{"tokens":[["text","\/nojs"]],"defaults":[],"requirements":[],"hosttokens":[["text","local.deblan"]],"methods":[],"schemes":[]}},"prefix":"","host":"localhost","port":"","scheme":"http","locale":[]}
\ No newline at end of file
diff --git a/src/Controller/Blog/Api/CommentController.php b/src/Controller/Blog/Api/CommentController.php
new file mode 100644
index 0000000..a247d59
--- /dev/null
+++ b/src/Controller/Blog/Api/CommentController.php
@@ -0,0 +1,23 @@
+<?php
+
+namespace App\Controller\Blog\Api;
+
+use Symfony\Bundle\FrameworkBundle\Controller\AbstractController;
+use Symfony\Component\HttpFoundation\Response;
+use Symfony\Component\Routing\Annotation\Route;
+use Symfony\Component\HttpFoundation\JsonResponse;
+use App\Markdown\Parser\Comment as CommentParser;
+use Symfony\Component\HttpFoundation\Request;
+
+class CommentController extends AbstractController
+{
+    /**
+     * @Route("/api/blog/comment/preview", name="api_blog_comment_preview", options={"expose"=true})
+     */
+    public function preview(Request $request, CommentParser $parser): JsonResponse
+    {
+        return $this->json([
+            'render' => $parser->transformMarkdown($request->request->get('content')),
+        ]);
+    }
+}