diff --git a/back/index.js b/back/index.js
index ce76faa..e87d476 100644
--- a/back/index.js
+++ b/back/index.js
@@ -1,20 +1,16 @@
 const express = require('express');
 
 const util = require('./util');
-const network = require('./data/network.json');
 const realtime = require('./data/realtime');
 
 const app = express();
-const port = 3000;
-
-app.use(express.static('dist'));
+const port = 4321;
 
 app.get('/courses', async (req, res) =>
 {
+    res.header('Access-Control-Allow-Origin', '*');
     const courses = await realtime.getCourses();
     return res.json(courses);
 });
 
-app.get('/network', (req, res) => res.json(network));
-
 app.listen(port, () => console.log(`App listening on port ${port}`));
diff --git a/front/map.js b/front/map.js
index 8afc792..7a55447 100644
--- a/front/map.js
+++ b/front/map.js
@@ -21,15 +21,13 @@ const color = require('color');
 const mapboxToken = `pk.eyJ1IjoibWF0dGVvZGVsYWJyZSIsImEiOiJja2NxaTUyMmUwcmFhMn\
 h0NmFsdzQ3emxqIn0.cyxF0h36emIMTk3cc4VqUw`;
 
-const server = window.origin;
+const network = require('../back/data/network.json');
 
-const fetchDataSources = async () =>
+const makeDataSources = async () =>
 {
     const segmentsSource = new VectorSource();
     const stopsSource = new VectorSource();
 
-    const network = (await axios.get(`${server}/network`)).data;
-
     segmentsSource.addFeatures(
         Object.values(network.lines).flatMap(({color, routes}) =>
             routes.map(({segments}) =>
@@ -105,7 +103,7 @@ const createMap = async (target) =>
     });
 
     // Data overlay
-    const {segmentsSource, stopsSource} = await fetchDataSources();
+    const {segmentsSource, stopsSource} = await makeDataSources();
 
     const segmentsBorderLayer = new VectorLayer({
         source: segmentsSource,