diff --git a/ui/effects/use-interval.js b/ui/effects/use-interval.js
index bffe7c18e..e0bf92b24 100644
--- a/ui/effects/use-interval.js
+++ b/ui/effects/use-interval.js
@@ -12,7 +12,7 @@ export default function useInterval(callback, delay) {
       savedCallback.current();
     };
     if (delay !== null) {
-      let id = setInterval(tick, delay);
+      const id = setInterval(tick, delay);
       return () => clearInterval(id);
     }
   }, [delay]);