diff --git a/CHANGELOG.md b/CHANGELOG.md
index 968f63cea419..fc2f6c048665 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -149,6 +149,8 @@
   alias.
 * `[docs]` Include missing dependency in TestEnvironment sample code
 * `[docs]` Add clarification for hook execution order
+* `[docs]` Update `expect.anything()` sample code
+  ([#5007](https://github.com/facebook/jest/pull/5007))
 
 ## jest 21.2.1
 
diff --git a/docs/ExpectAPI.md b/docs/ExpectAPI.md
index 07bb4be5017b..9c108aa37e39 100644
--- a/docs/ExpectAPI.md
+++ b/docs/ExpectAPI.md
@@ -159,7 +159,7 @@ you want to check that a mock function is called with a non-null argument:
 ```js
 test('map calls its argument with a non-null argument', () => {
   const mock = jest.fn();
-  [1].map(mock);
+  [1].map(x => mock(x));
   expect(mock).toBeCalledWith(expect.anything());
 });
 ```