diff --git a/lib/utils/generate_asset_cache.js b/lib/utils/generate_asset_cache.js
index ddc86f1..607a11c 100644
--- a/lib/utils/generate_asset_cache.js
+++ b/lib/utils/generate_asset_cache.js
@@ -3,7 +3,7 @@ const path = require('path');
 const glob = require('glob');
 const templates = require('../templates.js');
 const route_manager = require('../route_manager.js');
-const { dest } = require('../config.js');
+const { dest, dev } = require('../config.js');
 
 function ensure_array(thing) {
 	return Array.isArray(thing) ? thing : [thing]; // omg webpack what the HELL are you doing
@@ -17,8 +17,10 @@ module.exports = function generate_asset_cache(clientInfo, serverInfo) {
 	const service_worker = generate_service_worker(chunk_files);
 	const index = generate_index(main_file);
 
-	fs.writeFileSync(path.join(dest, 'service-worker.js'), service_worker);
-	fs.writeFileSync(path.join(dest, 'index.html'), index);
+	if (dev) {
+		fs.writeFileSync(path.join(dest, 'service-worker.js'), service_worker);
+		fs.writeFileSync(path.join(dest, 'index.html'), index);
+	}
 
 	return {
 		client: {