diff --git a/app.js b/app.js
index 7a0b111..4c71ea3 100644
--- a/app.js
+++ b/app.js
@@ -52,7 +52,7 @@ router.post('/micropub', async (ctx, next) => {
 })
 
 function readMarkdown(md) {
-  const parsed = parse(value);
+  const parsed = parse(md);
   const codeBlocks = parsed.children.filter((block) => block.type === "code");
   const blocks = {
     html: codeBlocks.filter((block) => block.lang === "html"),