diff --git a/index.d.ts b/index.d.ts
index cf84001..b1e79e9 100644
--- a/index.d.ts
+++ b/index.d.ts
@@ -5,7 +5,7 @@ declare namespace electronDebug {
 		/**
 		Default: [Only in development](https://github.com/sindresorhus/electron-is-dev)
 		*/
-		readonly enabled?: boolean;
+		readonly isEnabled?: boolean;
 
 		/**
 		Show DevTools on each created `BrowserWindow`.
diff --git a/index.js b/index.js
index a46d8d9..30626b4 100644
--- a/index.js
+++ b/index.js
@@ -1,9 +1,8 @@
 'use strict';
-const electron = require('electron');
+const {app, BrowserWindow} = require('electron');
 const localShortcut = require('electron-localshortcut');
 const isDev = require('electron-is-dev');
 
-const {app, BrowserWindow} = electron;
 const isMacOS = process.platform === 'darwin';
 
 const devToolsOptions = {};
@@ -67,13 +66,14 @@ const addExtensionIfInstalled = (name, getPath) => {
 };
 
 module.exports = options => {
-	options = Object.assign({
-		enabled: null,
+	options = {
+		isEnabled: null,
 		showDevTools: true,
-		devToolsMode: 'undocked'
-	}, options);
+		devToolsMode: 'undocked',
+		...options
+	};
 
-	if (options.enabled === false || (options.enabled === null && !isDev)) {
+	if (options.isEnabled === false || (options.isEnabled === null && !isDev)) {
 		return;
 	}
 
@@ -97,7 +97,9 @@ module.exports = options => {
 		}
 	});
 
-	app.on('ready', () => {
+	(async () => {
+		await app.whenReady();
+
 		addExtensionIfInstalled('devtron', name => require(name).path);
 		addExtensionIfInstalled('electron-react-devtools', name => require(name).path);
 
@@ -107,7 +109,7 @@ module.exports = options => {
 
 		localShortcut.register('CmdOrCtrl+R', refresh);
 		localShortcut.register('F5', refresh);
-	});
+	})();
 };
 
 // TODO: Remove this for the next major release
diff --git a/index.test-d.ts b/index.test-d.ts
index ef3354b..39d64d5 100644
--- a/index.test-d.ts
+++ b/index.test-d.ts
@@ -7,7 +7,7 @@ import {refresh, devTools, openDevTools} from '.';
 
 expectType<void>(
 	electronDebug({
-		enabled: true,
+		isEnabled: true,
 		showDevTools: true
 	})
 );
diff --git a/readme.md b/readme.md
index 7361d88..ace9d01 100644
--- a/readme.md
+++ b/readme.md
@@ -43,7 +43,7 @@ Just install any of these extension and they'll be activated for you:
 $ npm install electron-debug
 ```
 
-*Requires Electron 2.0.0 or later.*
+*Requires Electron 4 or later.*
 
 <a href="https://www.patreon.com/sindresorhus">
 	<img src="https://c5.patreon.com/external/logo/become_a_patron_button@2x.png" width="160">
@@ -68,7 +68,7 @@ let win;
 
 ## API
 
-Only runs when in [development](https://github.com/sindresorhus/electron-is-dev), unless overridden by the `enabled` option. So no need to guard it for production.
+Only runs when in [development](https://github.com/sindresorhus/electron-is-dev), unless overridden by the `isEnabled` option. So no need to guard it for production.
 
 ### electronDebug([options])
 
@@ -78,7 +78,7 @@ Install keyboard shortcuts and optionally activate DevTools on each created `Bro
 
 Type: `Object`
 
-##### enabled
+##### isEnabled
 
 Type: `boolean`