diff --git a/ERRATA.md b/ERRATA.md
index 24ed307..0eb7bd5 100644
--- a/ERRATA.md
+++ b/ERRATA.md
@@ -80,3 +80,23 @@ This document includes errata for the [Activity Streams](https://www.w3.org/TR/a
- Unlike `latitude` and `longitude`, the domain of the `altitude` term is the `Object` type. The `altitude` term should be included in the list of properties of an `Object`. Because `altitude` is primarily documented as a property of a `Place`, publishers should not include `altitude` on objects that are not of type `Place`, and consumers should accept objects with this property that aren't of type `Place`.
- The domain of the `attributedTo` property is both `Link` and `Object`. `attributedTo` should be included in the list of properties of a `Link`.
+
+ - Example 157 is not valid JSON because the `content` property extends over multiple lines. The correct example is:
+
+ ```json
+ {
+ "@context": "https://www.w3.org/ns/activitystreams",
+ "name": "A thank-you note",
+ "type": "Note",
+ "content": "Thank you @sally for all your hard work! #givingthanks",
+ "to": {
+ "name": "Sally",
+ "type": "Person",
+ "id": "http://sally.example.org"
+ },
+ "tag": {
+ "id": "http://example.org/tags/givingthanks",
+ "name": "#givingthanks"
+ }
+ }
+ ```