diff --git a/README.md b/README.md
index eb29f50c9..c02791a3f 100644
--- a/README.md
+++ b/README.md
@@ -1,3 +1,7 @@
+*This project is an instance of original project made by [Patrick Wang](https://github.com/patw0929).
+Because of the lack of activity on original repo, I have added some functionalities and published it on npmjs for my own personal use.
+Copyright (c) 2015-2019 [Patrick Wang](https://github.com/patw0929).*
+
 # React-Intl-Tel-Input
 
 [![PRs Welcome](https://img.shields.io/badge/PRs-welcome-brightgreen.svg?style=flat-square)](http://makeapullrequest.com)
@@ -119,4 +123,3 @@ yarn run lint
 MIT
 
 Copyright (c) 2015-2019 patw.
-
diff --git a/src/components/IntlTelInput.js b/src/components/IntlTelInput.js
index 03ec81a01..fef0f2c76 100644
--- a/src/components/IntlTelInput.js
+++ b/src/components/IntlTelInput.js
@@ -163,6 +163,10 @@ class IntlTelInput extends Component {
     if (this.props.allowDropdown !== prevProps.allowDropdown) {
       this.allowDropdown = this.props.allowDropdown;
     }
+
+    if (this.props.defaultCountry !== prevProps.defaultCountry) {
+      this.updateFlagOnDefaultCountryChange(this.props.defaultCountry)
+    }
   }
 
   componentWillUnmount() {
@@ -171,6 +175,11 @@ class IntlTelInput extends Component {
     this.unbindDocumentClick();
   }
 
+  // Updates flag when value of defaultCountry props change
+  updateFlagOnDefaultCountryChange = (countryCode) => {
+    this.setFlag(countryCode, false)
+  };
+
   getTempCountry = countryCode => {
     if (countryCode === 'auto') {
       return 'auto';
@@ -211,7 +220,7 @@ class IntlTelInput extends Component {
   };
 
   // select the given flag, update the placeholder and the active list item
-  // Note: called from setInitialState, updateFlagFromNumber, selectListItem, setCountry
+  // Note: called from setInitialState, updateFlagFromNumber, selectListItem, setCountry, updateFlagOnDefaultCountryChange
   setFlag = (countryCode, isInit) => {
     const prevCountry =
       this.selectedCountryData && this.selectedCountryData.iso2