diff --git a/web/olm/olm.test.js b/web/olm/olm.test.js
--- a/web/olm/olm.test.js
+++ b/web/olm/olm.test.js
@@ -6,13 +6,13 @@
   it('should construct an empty olm.Account', async () => {
     await olm.init();
     const account = new olm.Account();
-    expect(account).not.toBe(undefined);
+    expect(account).toBeDefined();
   });
   it('should be able to generate and return prekey', async () => {
     await olm.init();
     const account = new olm.Account();
     account.create();
     account.generate_prekey();
-    expect(account.prekey()).not.toBe(undefined);
+    expect(account.prekey()).toBeDefined();
   });
 });