diff --git a/app.js b/app.js
index 0068e8b..55b21be 100644
--- a/app.js
+++ b/app.js
@@ -24,7 +24,7 @@ let mainWindow
 
 function createWindow () {
   // Create the browser window.
-  mainWindow = new BrowserWindow({width: 800, height: 600})
+  mainWindow = new BrowserWindow({width: 800, height: 600, fullscreen: true})
 
   // and load the index.html of the app.
   mainWindow.loadURL(url.format({