diff --git a/extensions/simple-browser/build/copy.js b/extensions/simple-browser/build/copy.js
new file mode 100644
index 00000000000..d48747399a8
--- /dev/null
+++ b/extensions/simple-browser/build/copy.js
@@ -0,0 +1,14 @@
+/*---------------------------------------------------------------------------------------------
+ *  Copyright (c) Microsoft Corporation. All rights reserved.
+ *  Licensed under the MIT License. See License.txt in the project root for license information.
+ *--------------------------------------------------------------------------------------------*/
+const fs = require('fs');
+const path = require('path');
+
+fs.copyFileSync(
+	path.join('node_modules', 'vscode-codicons', 'dist', 'codicon.css'),
+	path.join('media', 'codicon.css'));
+
+fs.copyFileSync(
+	path.join('node_modules', 'vscode-codicons', 'dist', 'codicon.ttf'),
+	path.join('media', 'codicon.ttf'));
diff --git a/extensions/simple-browser/package.json b/extensions/simple-browser/package.json
index 62f2dc2fc42..d5c6da0a701 100644
--- a/extensions/simple-browser/package.json
+++ b/extensions/simple-browser/package.json
@@ -58,7 +58,7 @@
     "build-preview-production": "webpack --mode production",
     "compile-web": "npx webpack-cli --config extension-browser.webpack.config --mode none",
     "watch-web": "npx webpack-cli --config extension-browser.webpack.config --mode none --watch --info-verbosity verbose",
-    "postinstall": "cp node_modules/vscode-codicons/dist/codicon.css media/ ; cp node_modules/vscode-codicons/dist/codicon.ttf media/"
+    "postinstall": "node ./build/copy"
   },
   "dependencies": {
     "vscode-extension-telemetry": "0.1.1",