diff --git a/src/libraries/ViewPager/index.js b/src/libraries/ViewPager/index.js
index b786ad1..59f98f1 100644
--- a/src/libraries/ViewPager/index.js
+++ b/src/libraries/ViewPager/index.js
@@ -260,7 +260,8 @@ export default class ViewPager extends PureComponent {
     }
 
     keyExtractor (item, index) {
-        return index;
+        // add toString . Resolve warning info : Invalid child context , expected `string`
+        return index.toString();
     }
 
     renderRow ({ item, index }) {