diff --git a/src/components/nav.js b/src/components/nav.js
index 502ce14..8be2441 100644
--- a/src/components/nav.js
+++ b/src/components/nav.js
@@ -21,6 +21,7 @@ export default () => (
       <div className={navStyles.navContent}>
         {pages.map(([title, link]) => (
           <Link
+            key={title}
             className={navStyles.navItem}
             activeClassName={navStyles.navItemActive}
             activeStyle={{ textDecoration: `solid underline white 0.2em` }}