diff --git a/src/MessageVideo.js b/src/MessageVideo.js
index f146959..ea57d0e 100644
--- a/src/MessageVideo.js
+++ b/src/MessageVideo.js
@@ -1,30 +1,28 @@
+/* eslint global-require: 0 */
+
 import PropTypes from 'prop-types';
 import React from 'react';
 import { StyleSheet, View, ViewPropTypes } from 'react-native';
 import { isExpo } from './utils';
 
 let Video;
-if(isExpo()) {
-  const { Video as ExpoVideo } = require('expo')
-  Video = ExpoVideo
-} else { 
-   Video = require('react-native-video')
+if (isExpo()) {
+  const Expo = require('expo');
+  const { Video: ExpoVideo } = Expo;
+  Video = ExpoVideo;
+} else {
+  Video = require('react-native-video');
 }
 
-
-export default function MessageVideo({
-  containerStyle,
-  videoProps,
-  videoStyle,
-  currentMessage,
-}) {
+export default function MessageVideo({ containerStyle, videoProps, videoStyle, currentMessage }) {
   return (
     // eslint-disable-next-line no-use-before-define
     <View style={[styles.container, containerStyle]}>
-
       <Video
         {...videoProps}
-        ref={(r) => { this.player = r; }}
+        ref={(r) => {
+          this.player = r;
+        }}
         source={{ uri: currentMessage.video }}
         style={videoStyle}
         resizeMode="cover"
@@ -37,8 +35,7 @@ export default function MessageVideo({
 }
 
 const styles = StyleSheet.create({
-  container: {
-  },
+  container: {},
 });
 
 MessageVideo.defaultProps = {
diff --git a/src/__tests__/utils.test.js b/src/__tests__/utils.test.js
index cd91a95..23d1c65 100644
--- a/src/__tests__/utils.test.js
+++ b/src/__tests__/utils.test.js
@@ -1,4 +1,4 @@
-import { isSameDay, isSameUser } from '../utils';
+import { isSameDay, isSameUser, isExpo } from '../utils';
 
 it('should test if same day', () => {
   const now = new Date();
@@ -9,3 +9,7 @@ it('should test if same user', () => {
   const message = { user: { _id: 1 } };
   expect(isSameUser(message, message)).toBe(true);
 });
+
+it('should test if isExpo', () => {
+  expect(isExpo()).toBe(false);
+});
diff --git a/src/utils.js b/src/utils.js
index c852578..5a3045a 100644
--- a/src/utils.js
+++ b/src/utils.js
@@ -20,7 +20,5 @@ export function isSameUser(currentMessage = {}, diffMessage = {}) {
 }
 
 export function isExpo() {
-  return global.__exponent || global.__expo;
+  return !!global && (!!global.__exponent || !!global.__expo);
 }
-
-