diff --git a/src/widgets/CountryTable.js b/src/widgets/CountryTable.js
index b1df7db..2a18dad 100644
--- a/src/widgets/CountryTable.js
+++ b/src/widgets/CountryTable.js
@@ -27,7 +27,6 @@ export default class Template extends Component {
 
 	constructor(props) {
 		super(props);
-		this.state = {};
 	}
 
 	componentDidMount() {
@@ -63,6 +62,17 @@ export default class Template extends Component {
 			});
 	}
 
+	shouldComponentUpdate(nextProps) {
+		const { props } = this;
+
+		return Object.keys(this.props).reduce((acc, key) => {
+			if (props[key] !== nextProps[key]) {
+				return acc && false;
+			}
+			return acc;
+		}, true);
+	}
+
 	render() {
 		if (this.viz != null) {
 			this.viz.show(this.ref);