diff --git a/lib/react-native-multi-select.js b/lib/react-native-multi-select.js
index 5674117..36aab32 100644
--- a/lib/react-native-multi-select.js
+++ b/lib/react-native-multi-select.js
@@ -507,7 +507,7 @@ export default class MultiSelect extends Component {
         <FlatList
           data={renderItems}
           extraData={selectedItems}
-          keyExtractor={item => item[uniqueKey]}
+          keyExtractor={(item, index) => index.toString()}
           listKey={item => item[uniqueKey]}
           renderItem={rowData => this._getRow(rowData.item)}
           {...flatListProps}