diff --git a/lib/internal/process/promises.js b/lib/internal/process/promises.js
index e364822fa3a..e22fb1ae5ed 100644
--- a/lib/internal/process/promises.js
+++ b/lib/internal/process/promises.js
@@ -25,7 +25,7 @@ function setupPromises(scheduleMicrotasks) {
   }
 
   function rejectionHandled(promise) {
-    var hasBeenNotified = hasBeenNotifiedProperty.get(promise);
+    const hasBeenNotified = hasBeenNotifiedProperty.get(promise);
     if (hasBeenNotified !== undefined) {
       hasBeenNotifiedProperty.delete(promise);
       const uid = promiseToGuidProperty.get(promise);