diff --git a/e2e/fake-promises/immediate/__tests__/generator.test.js b/e2e/fake-promises/immediate/__tests__/generator.test.js
index 048163f1a7e7..871222f9aafe 100644
--- a/e2e/fake-promises/immediate/__tests__/generator.test.js
+++ b/e2e/fake-promises/immediate/__tests__/generator.test.js
@@ -13,6 +13,7 @@ test('fake promises', () => {
     someValue = 'foobar';
   });
 
+  // this function is only available when using legacy fake timers
   jest.runAllImmediates();
 
   expect(someValue).toBe('foobar');
diff --git a/e2e/fake-promises/immediate/package.json b/e2e/fake-promises/immediate/package.json
index 0f50640514e1..44363c0165db 100644
--- a/e2e/fake-promises/immediate/package.json
+++ b/e2e/fake-promises/immediate/package.json
@@ -1,6 +1,6 @@
 {
   "jest": {
-    "timers": "fake",
+    "timers": "legacy",
     "setupFiles": [
       "<rootDir>/fake-promises"
     ],