diff --git a/lib/rehype-sn.js b/lib/rehype-sn.js
index fb35bf4b..231c0104 100644
--- a/lib/rehype-sn.js
+++ b/lib/rehype-sn.js
@@ -16,6 +16,11 @@ export default function rehypeSN (options = {}) {
   return function transformer (tree) {
     try {
       visit(tree, (node, index, parent) => {
+        if (parent?.tagName === 'code') {
+          // don't process code blocks
+          return
+        }
+
         // Handle inline code property
         if (node.tagName === 'code') {
           node.properties.inline = !(parent && parent.tagName === 'pre')