diff --git a/lib/gui/etcher.js b/lib/gui/etcher.js
index 91a57358..00047ab0 100644
--- a/lib/gui/etcher.js
+++ b/lib/gui/etcher.js
@@ -60,11 +60,14 @@ const checkForUpdates = async (interval) => {
  */
 const createMainWindow = () => {
   const mainWindow = new electron.BrowserWindow({
-    width: 800,
-    height: 480,
-    useContentSize: true,
+    // eslint-disable-next-line no-magic-numbers
+    width: parseInt(config.width, 10) || 800,
+    // eslint-disable-next-line no-magic-numbers
+    height: parseInt(config.height, 10) || 480,
+    frame: !config.fullscreen,
+    useContentSize: false,
     show: false,
-    resizable: Boolean(config.fullscreen),
+    resizable: false,
     maximizable: false,
     fullscreen: Boolean(config.fullscreen),
     fullscreenable: Boolean(config.fullscreen),