diff --git a/src/ui/public/promises/__tests__/promises.js b/src/ui/public/promises/__tests__/promises.js
index c34f585269b4..4547a30eab03 100644
--- a/src/ui/public/promises/__tests__/promises.js
+++ b/src/ui/public/promises/__tests__/promises.js
@@ -110,8 +110,8 @@ describe('Promise service', function () {
       const p2 = new Promise(resolve => setTimeout(resolve, 5000));
       await Promise.race([p1, p2]);
       const time = Date.now() - start;
-      expect(time).to.be.lessThan(1000);
-      expect(time).to.be.greaterThan(100);
+      expect(time).to.not.be.lessThan(100);
+      expect(time).to.not.be.greaterThan(2000);
     });
     it('allows non-promises in the array', async () => {
       expect(await Promise.race([1,2,3])).to.be(1);