diff --git a/webpack.config.js b/webpack.config.js
index ca7c059aec..3769bfb0fb 100644
--- a/webpack.config.js
+++ b/webpack.config.js
@@ -39,8 +39,10 @@ const config = {
   output: {
     filename: 'xterm.js',
     path: path.resolve('./lib'),
-    libraryTarget: 'umd'
+    libraryTarget: 'umd',
+    // Force usage of globalThis instead of global / self. (This is cross-env compatible)
+    globalObject: 'globalThis',
   },
-  mode: 'production'
+  mode: 'production',
 };
 module.exports = config;