diff --git a/lib/utils/create_app.js b/lib/utils/create_app.js
index 0c1daa84e..09202cb12 100644
--- a/lib/utils/create_app.js
+++ b/lib/utils/create_app.js
@@ -3,6 +3,10 @@ const path = require('path');
 const route_manager = require('../route_manager.js');
 const { src, dest, server_routes, dev } = require('../config.js');
 
+function posixify(file) {
+	return file.replace(/[\/\\]/g, '/');
+}
+
 module.exports = function create_app() {
 	const { routes } = route_manager;
 
@@ -17,13 +21,14 @@ module.exports = function create_app() {
 						'{}' :
 						`{ ${route.dynamic.map((part, i) => `${part}: match[${i + 1}]`).join(', ') } }`;
 
-					return `{ pattern: ${route.pattern}, params: match => (${params}), load: () => import(/* webpackChunkName: "${route.id}" */ '${src}/${route.file}') }`
+					const file = posixify(`${src}/${route.file}`);
+					return `{ pattern: ${route.pattern}, params: match => (${params}), load: () => import(/* webpackChunkName: "${route.id}" */ '${file}') }`
 				})
 				.join(', ')
 		}]`;
 
 		let main = template
-			.replace(/__app__/g, path.resolve(__dirname, '../../runtime/app.js'))
+			.replace(/__app__/g, posixify(path.resolve(__dirname, '../../runtime/app.js')))
 			.replace(/__routes__/g, code)
 			.replace(/__dev__/g, String(dev));
 
@@ -44,9 +49,10 @@ module.exports = function create_app() {
 	function create_server_routes() {
 		const imports = routes
 			.map(route => {
+				const file = posixify(`${src}/${route.file}`);
 				return route.type === 'page' ?
-					`import ${route.id} from '${src}/${route.file}';` :
-					`import * as ${route.id} from '${src}/${route.file}';`;
+					`import ${route.id} from '${file}';` :
+					`import * as ${route.id} from '${file}';`;
 			})
 			.join('\n');