diff --git a/frontend/src/component/feature/feature-component.jsx b/frontend/src/component/feature/feature-component.jsx
index 84920fcad5..599c15cafe 100644
--- a/frontend/src/component/feature/feature-component.jsx
+++ b/frontend/src/component/feature/feature-component.jsx
@@ -28,8 +28,12 @@ const Feature = ({
     ];
 
     const leftActions = [
-        <Chip><span className={style.yes}>{metricsLastHour.yes}</span> / <span className={style.no}>{metricsLastHour.no}</span></Chip>,
-        <Chip><span className={style.yes}>{metricsLastMinute.yes}</span> / <span className={style.no}>{metricsLastMinute.no}</span></Chip>,
+        <Chip key="m.hour">
+            <span className={style.yes}>{metricsLastHour.yes}</span> / <span className={style.no}>{metricsLastHour.no}</span>
+        </Chip>,
+        <Chip key="m.min">
+            <span className={style.yes}>{metricsLastMinute.yes}</span> / <span className={style.no}>{metricsLastMinute.no}</span>
+        </Chip>,
         <Switch key="left-actions" onChange={() => onFeatureClick(feature)} checked={enabled} />,
     ];
 
diff --git a/frontend/src/component/metrics/metrics-component.js b/frontend/src/component/metrics/metrics-component.js
index c8369d9a0c..5ce58eabb8 100644
--- a/frontend/src/component/metrics/metrics-component.js
+++ b/frontend/src/component/metrics/metrics-component.js
@@ -13,7 +13,7 @@ class Metrics extends Component {
 
         return (
             <List>
-                <ListSubHeader caption={<span>Total of {globalCount} toggles </span>} />
+                <ListSubHeader caption={`Total of ${globalCount} toggles`} />
                 <ListDivider />
                 {clientList.map(({ name, count, ping, appName }, i) =>
                     <ListItem
diff --git a/frontend/src/component/nav.jsx b/frontend/src/component/nav.jsx
index d4f6dfd435..54692cbc8c 100644
--- a/frontend/src/component/nav.jsx
+++ b/frontend/src/component/nav.jsx
@@ -35,7 +35,7 @@ export default class UnleashNav extends Component {
                     </a>
 
                     <ListDivider />
-                    <ListItem selectable={false} ripple="false">
+                    <ListItem selectable={false} ripple={false}>
                         <p>A product by <a href="https://finn.no" target="_blank">FINN.no</a></p>
                     </ListItem>
                 </List>