diff --git a/src/components/TabList.js b/src/components/TabList.js
index 6388e24918..5175e6d6e6 100644
--- a/src/components/TabList.js
+++ b/src/components/TabList.js
@@ -9,7 +9,11 @@ export default class TabList extends Component {
 
   static propTypes = {
     children: PropTypes.oneOfType([PropTypes.object, PropTypes.array]),
-    className: PropTypes.oneOfType([PropTypes.string, PropTypes.array, PropTypes.object]),
+    className: PropTypes.oneOfType([
+      PropTypes.string,
+      PropTypes.array,
+      PropTypes.object,
+    ]),
   };
 
   render() {