diff --git a/src/main/index.ts b/src/main/index.ts
index 656b7c0..beb45e5 100644
--- a/src/main/index.ts
+++ b/src/main/index.ts
@@ -13,7 +13,7 @@ if (!app.requestSingleInstanceLock()) {
 
 let win: BrowserWindow | null = null
 
-async function bootstrap() {
+async function createWindow() {
   win = new BrowserWindow({
     webPreferences: {
       preload: path.join(__dirname, '../preload/index.cjs'),
@@ -27,12 +27,11 @@ async function bootstrap() {
     const url = `http://${pkg.env.HOST || '127.0.0.1'}:${pkg.env.PORT}`
 
     win.loadURL(url)
-    win.maximize()
     win.webContents.openDevTools()
   }
 }
 
-app.whenReady().then(bootstrap)
+app.whenReady().then(createWindow)
 
 app.on('window-all-closed', () => {
   win = null
@@ -49,6 +48,15 @@ app.on('second-instance', () => {
   }
 })
 
+app.on('activate', () => {
+  const allWindows = BrowserWindow.getAllWindows()
+  if (allWindows.length) {
+    allWindows[0].focus()
+  } else {
+    createWindow()
+  }
+})
+
 // @TODO
 // auto update
 /* if (app.isPackaged) {