diff --git a/static-html/postcss.config.js b/static-html/postcss.config.js
index cf9f137..922ffb5 100644
--- a/static-html/postcss.config.js
+++ b/static-html/postcss.config.js
@@ -1,4 +1,4 @@
-const postcssFunctions = require('./src/js/postcss-functions.js');
+const postcssFunctions = require('./src/js/postcss-functions');
 
 module.exports = {
   plugins: [