diff --git a/scripts/build-post-list.js b/scripts/build-post-list.js
index e9a95a6c448..0f54ecea005 100644
--- a/scripts/build-post-list.js
+++ b/scripts/build-post-list.js
@@ -1,5 +1,5 @@
 const { readdirSync, statSync, existsSync, readFileSync, writeFileSync } = require('fs')
-const { basename } = require('path')
+const { basename, join } = require('path')
 const frontMatter = require('gray-matter')
 const toc = require('markdown-toc')
 const { slugify } = require('markdown-toc/lib/utils')
@@ -60,10 +60,11 @@ function walkDirectories(directories, result, basePath, sectionWeight = 0, secti
 
     for (let file of files) {
       let details
-      const fileName = [directory, file].join('/')
-      const fileNameWithSection = [fileName, '_section.mdx'].join('/')
-      const slug = fileName.replace(new RegExp(`^${basePath}`), '')
+      const fileName = join(directory, file);
+      const fileNameWithSection = join(fileName, '_section.mdx');
+      const slug = fileName.replace(new RegExp(`^${basePath}`), '').replace(/\\/g, '/');
       const slugElements = slug.split('/');
+
       if (isDirectory(fileName)) {
         if (existsSync(fileNameWithSection)) {
           // Passing a second argument to frontMatter disables cache. See https://github.com/asyncapi/website/issues/1057
@@ -161,7 +162,7 @@ function slugifyToC(str) {
 }
 
 function isDirectory(dir) {
-  return statSync(dir).isDirectory()
+    return statSync(dir).isDirectory()
 }
 
 function capitalize(text) {