diff --git a/lib/loaders/entry-loader.js b/lib/loaders/entry-loader.js
index 49753ab..a77f5ae 100644
--- a/lib/loaders/entry-loader.js
+++ b/lib/loaders/entry-loader.js
@@ -1,6 +1,6 @@
 const path = require('path');
 const loaderUtils = require('loader-utils');
-const apiPath = path.join(__dirname, 'api.js');
+const apiPath = path.join(__dirname, 'api.js').split(path.sep).join('/');
 
 module.exports = function() {
   const { activationUrl, ips } = loaderUtils.getOptions(this) || {};