diff --git a/docs/developer-guide/nodejs-api.md b/docs/developer-guide/nodejs-api.md
index 708d1fa82f8..ce727135784 100644
--- a/docs/developer-guide/nodejs-api.md
+++ b/docs/developer-guide/nodejs-api.md
@@ -353,6 +353,8 @@ The `LintMessage` value is the information of each linting error. The `messages`
   The rule name that generates this lint message. If this message is generated by the ESLint core rather than rules, this is `null`.
 * `severity` (`1 | 2`)<br>
   The severity of this message. `1` means warning and `2` means error.
+* `fatal` (`boolean | undefined`)<br>
+  `true` if this is a fatal error unrelated to a rule, like a parsing error.
 * `message` (`string`)<br>
   The error message.
 * `line` (`number`)<br>