diff --git a/test/test-utils.js b/test/test-utils.js
index 6e6738de..880dd772 100644
--- a/test/test-utils.js
+++ b/test/test-utils.js
@@ -57,4 +57,6 @@ export function deleteIndexedDB(dbName) {
     });
 }
 
-export const sleep = (ms) => new Promise((resolve) => { setTimeout(resolve, ms); });
+export function sleep(ms) {
+    return new Promise((resolve) => { setTimeout(resolve, ms); });
+}